Input: When did the majority party in the body which determines rules of the US House and US Senate gain control of the House?

Context:
Passage 1:
Party leaders of the United States Senate
The positions of majority leader and minority leader are held by two United States senators and members of the party leadership of the United States Senate. They serve as the chief spokespersons for their respective political parties holding the majority and the minority in the United States Senate. They are each elected as majority leader and minority leader by the senators of their party caucuses: the Senate Democratic Caucus and the Senate Republican Conference.
By Senate precedent, the presiding officer gives the majority leader priority in obtaining recognition to speak on the floor of the Senate. The majority leader serves as the chief representative of their party in the Senate, and is considered the most powerful member of the Senate. They also serve as the chief representative of their party in the entire Congress if the House of Representatives, and thus the office of the speaker of the House, is controlled by the opposition party. The Senate's executive and legislative business is also managed and scheduled by the majority leader.
The assistant majority leader and assistant minority leader of the United States Senate, commonly called whips, are the second-ranking members of each party's leadership. The main function of the majority and minority whips is to gather votes of their respective parties on major issues. As the second-ranking members of Senate leadership, if there is no floor leader present, the whip may become acting floor leader.

Current floor leaders
The Senate is currently composed of 49 Republicans, 48 Democrats, and 3 independents; all the independents caucus with the Democrats.
The current leaders are Senators Chuck Schumer (D) of New York and Mitch McConnell (R) of Kentucky. The current assistant leaders, or whips, are Senators Dick Durbin (D) of Illinois and John Thune (R) of South Dakota.

History
By at least 1850, parties in each chamber of Congress began naming chairs, and while conference and caucus chairs carried very little authority, the Senate party floor leader positions arose from the position of conference chair. Senate Democrats began the practice of electing their floor leaders in 1920 while they were in the minority. John W. Kern was a Democratic senator from Indiana. While the title was not official, the Senate website identifies Kern as the first Senate party leader, serving in that capacity from 1913 through 1917 (and in turn, the first Senate Democratic leader), while serving concurrently as chairman of the Senate Democratic Caucus. In 1925, the Republicans (who were in the majority at the time) also adopted this language when Charles Curtis became the first (official) majority leader, although his immediate predecessor Henry Cabot Lodge is considered the first (unofficial) Senate majority leader.
The United States Constitution designates the Vice President of the United States as president of the Senate. The Constitution also calls for a president pro tempore, to serve as the presiding officer when the president of the Senate (the vice president) is absent. In practice, neither the vice president nor the president pro tempore—customarily the most senior (longest-serving) senator in the majority party—actually presides over the Senate on a daily basis; that task is given to junior Senators of the majority party. Since the vice president may be of a different party from the majority and is not a Senate member subject to discipline, the rules of procedure of the Senate give the Vice President no power beyond the presiding role. For these reasons, it is the majority leader who, in practice, manages the Senate. This is in contrast to the House of Representatives, where the elected speaker of the House has a great deal of discretionary power and generally presides over votes on legislative bills.

List of party leaders
The Democratic Party first selected a leader in 1920. The Republican Party first formally designated a leader in 1925.

See also
Party leaders of the United States House of Representatives
President pro tempore of the United States Senate
Vice President of the United States (President of the United States Senate)
Party divisions of United States Congresses
List of political parties in the United States

Notes
Passage 2:
2014 United States Senate elections
The 2014 United States Senate elections were held on November 4, 2014. A total of 36 seats in the 100-member U.S. Senate were contested. Thirty-three Class 2 seats were contested for regular six-year terms to be served from January 3, 2015, to January 3, 2021, and three Class 3 seats were contested in special elections due to Senate vacancies. The elections marked 100 years of direct elections of U.S. senators. Going into the elections, 21 of the contested seats were held by the Democratic Party, while 15 were held by the Republican Party.
The Democrats regained the majority of the Senate in the 110th Congress, which started in January 2009; the Democrats had not controlled the Senate since January 2005. They needed a net gain of at least six seats to obtain a majority and were projected by polls to do so. On election night, they held all of their seats and gained nine Democratic-held seats. Republicans defeated five Democratic incumbents: Mark Begich of Alaska lost to Dan Sullivan, Mark Pryor of Arkansas lost to Tom Cotton, Mark Udall of Colorado lost to Cory Gardner, Mary Landrieu of Louisiana lost to Bill Cassidy, and Kay Hagan of North Carolina lost to Thom Tillis. Republicans also picked up another four open seats in Iowa, Montana, South Dakota, and West Virginia. Democrats did not pick up any Republican-held seats, but they did hold an open seat in Michigan.
This was the second consecutive election held in a president's sixth year where control of the Senate changed hands, the first being in 2006. This was also the first time that the Democrats lost control of the Senate in a sixth-year midterm since 1918. With a total net gain of nine seats, the Republicans made the largest Senate gain by any party since 1980. This is also the first election since 1980 in which more than two incumbent Democratic Senators were defeated by their Republican challengers. Days after the election, the United States Election Project estimated that 36.4% of eligible voters voted, 4% lower than the 2010 elections, and possibly the lowest turnout rate since the 1942 election.As of 2022, this remains the last time that a Republican has won a U.S. Senate election in Colorado. This is the most recent Senate elections where any Republican flipped an open Democratic-held seat. This is also the most recent election where the party winning control of the Senate won the popular vote. It also remains the last time that the president's party has suffered a net loss of Senate seats in a midterm.

Partisan composition
For a majority, Republicans needed at least 51 seats. Democrats could have retained a majority with 48 seats (assuming the two Independents continued to caucus with them) because the Democratic Vice President Joe Biden would become the tie-breaker. From 1915 to 2013, control of the U.S. Senate flipped in 10 of 50 cycles, or 20% of the time. Republicans had lost ground in the 2012 elections, leading to an internal fight among the Republican leadership over the best strategies and tactics for the 2014 Senate races. By December 2013, eight of the twelve incumbent Republicans running for re-election saw Tea Party challenges. However, Republican incumbents won every primary challenge. Although Democrats saw some opportunities for pickups, the combination of Democratic retirements and numerous Democratic seats up for election in swing states and red states gave Republicans hopes of taking control of the Senate. 7 of the 21 states with Democratic seats up for election in 2014 had voted for Republican Mitt Romney in the 2012 presidential election compared to just 1 state with a Republican senator that voted for Barack Obama. Democrats also faced the lower voter turnout that accompanies mid-term elections.Poll aggregation website FiveThirtyEight gave the Republican Party a 60% chance of taking control of the Senate as of September 28. Another poll aggregation website, RealClearPolitics, gave the Republican Party a net gain of 7 seats. Due to the closeness of several races, it was initially believed that Senate control might not be decided on election night. Both Louisiana and Georgia were seen as competitive, and both states require a run-off election if no candidate takes a majority of the vote.
Two independent candidates (in Kansas and South Dakota) refused to commit to caucusing with either party. In the final months of the race, polls showed them with viable chances of winning, leading some analysts to speculate on the possibility of an "Independent caucus" that could also include Maine Senator Angus King and possibly Vermont Senator Bernie Sanders. However, no Independent won a Senate race in 2014, and King and Sanders continue to caucus with the Democratic Party following the 2014 election.
By midnight ET, most major networks projected that the Republicans would take control of the Senate. The party held all three competitive Republican-held seats (Kentucky, Kansas, and Georgia), and defeated incumbent Democrats in North Carolina, Colorado, and Arkansas. Combined with the pick-ups of open seats in Iowa, Montana, South Dakota, and West Virginia, the Republicans made a net gain of 7 seats before the end of the night. Republicans defeated three incumbent Democrats, a task the party had not accomplished since the 1980 election. Five of the seven confirmed pickups were in states that voted for Mitt Romney in 2012, but two of the seats that Republicans won represent states that voted for Barack Obama in 2012 (Colorado and Iowa). Of the three races that were not called by the end of election night, Alaska and Virginia were still too close to call, while Louisiana held a December 6 run-off election. Virginia declared Democrat Mark Warner the winner of his race by a narrow margin over Republican Ed Gillespie on November 7, and Alaska declared Dan Sullivan the winner against Democratic incumbent Mark Begich a week later, on November 12. Republican Bill Cassidy defeated Democratic incumbent Mary Landrieu in the Louisiana runoff on December 6.

Election spending
Altogether, at least $3.67 billion was spent by candidates, parties, committees and outside groups in the 2014 election. Spending on the 2014 Senate elections by outside groups (i.e., organizations other than a candidate's campaign, such as super PACs and "dark money" nonprofit groups) more than doubled from 2010. In the 10 competitive races for which data was available, outside groups accounted for 47% of spending, candidates accounted for 41% of spending, and parties accounted for 12% of spending. The Senate race with the most outside spending was in North Carolina, at $80 million, a new record.The top outside spenders in the 11 most competitive Senate races were the following:

On the Republican side, the National Republican Senatorial Committee, Crossroads GPS, U.S. Chamber of Commerce, Ending Spending Action Fund, Freedom Partners Action Fund, American Crossroads, and the NRA Political Victory Fund.
On the Democratic side, the Democratic Senatorial Campaign Committee, Senate Majority PAC, and NextGen Climate Action Committee.

Results summary
The Republican Party made a net gain of nine U.S. Senate seats in the 2014 elections.Going into the elections, there were 53 Democratic, 45 Republican and 2 independent senators (both of whom caucus with the Democrats). In all, there were 36 elections: 33 senators were up for election this year as class 2 senators, and 3 faced special elections (all from Class 3). Of all these seats, 21 were held by Democrats and 15 were held by Republicans.

Colored shading indicates party with largest share of that row.

Source: Clerk of the U.S. House of Representatives

Change in composition
Before the elections
After the elections
Gains and losses
Retirements
Four Democrats and two Republicans retired instead of seeking re-election.

Resignations
One Republican resigned four years into his six-year term.

Nomination withdrawn
One Democrat was originally to seek election for a full 6-year term in office but withdrew.

Defeats
Five Democrats sought re-election but lost in the general election.

Race summaries
Special elections during the preceding Congress
In these special elections, the winners were elected during 2014 and seated before January 3, 2015 — except that one was seated on January 3, 2015, the effective date of the predecessor's resignation.

Elections leading to the next Congress
In these general elections, the winners were elected for the term beginning January 3, 2015; ordered by state.
All of the elections involved the Class 2 seats.

Closest races
In seven races the margin of victory was under 10%.

Final pre-election predictions
Predicted probability of Republican takeover
Several websites used poll aggregation and psephology to estimate the probability that the Republican Party would gain enough seats to take control of the Senate.

Predictions
Republicans needed to win at least six in order to gain a majority of 51 seats and Democrats needed to win at least seven in order to hold a majority of 50 seats (including the two independents who currently caucus with the Democrats) and the tie-breaking vote of Vice President Joe Biden.

Alabama
Three-term incumbent Republican Jeff Sessions had been re-elected with 63% of the vote in 2008. Sessions sought re-election. Democrat Victor Sanchez Williams ran against Sessions as a write-in candidate. Sessions won with 97.3 percent of the vote against assorted write-in candidates.

Alaska
One-term incumbent Democrat Mark Begich had been first elected with 48% of the vote in 2008, defeating six-term Senator Ted Stevens by 3,953 votes (a margin of 1.25%). Begich was 52 years old in 2014 and was seeking re-election to a second term. Stevens, who would have been almost 91 years old at the time of the election, had already filed for a rematch back in 2009, but was killed in a plane crash the following year.
Republican Lieutenant Governor Mead Treadwell, 2010 nominee Joe Miller, State Natural Resources Commissioner Daniel S. Sullivan, and Air Force veteran John Jaramillo ran for the GOP nomination. In the August 19 primary, Sullivan won the Republican nomination with 40% and defeated Begich in the general election.

Arkansas
Two-term incumbent Democrat Mark Pryor had been re-elected with 80% of the vote without Republican opposition in 2008. Pryor was running for a third term.Freshman Representative Tom Cotton of Arkansas's 4th congressional district was the Republican nominee. In the general election, Cotton defeated Pryor.

Colorado
One-term incumbent Democrat Mark Udall had been elected with 53% of the vote in 2008. Udall was running for re-election.Congressman Cory Gardner of Colorado's 4th congressional district was the Republican nominee; his late entry into the race caused numerous Republicans to withdraw their candidacies. Gaylon Kent was the Libertarian Party nominee. Unity Party of America founder and National Chairman Bill Hammons was the Unity Party nominee.

Delaware
Democrat Chris Coons won in the 2010 United States Senate special election in Delaware caused by Joe Biden's election as Vice President, winning by a 57% to 41% margin. Coons sought re-election. His Republican opponent was engineer Kevin Wade, whom Coons went on to defeat in the general election.

Georgia
Two-term incumbent Republican Saxby Chambliss had been re-elected with 57% of the vote in 2008 in a runoff election with former state Representative Jim Martin; Georgia requires run-off elections when no Senate candidate wins over 50% of the vote. Chambliss did not seek a third term.Political activist Derrick Grayson, Representatives Jack Kingston of Georgia's 1st congressional district, Paul Broun of Georgia's 10th congressional district, and Phil Gingrey of Georgia's 11th congressional district all declared their candidacy for the Republican nomination, as did former Secretary of State Karen Handel. In the May 20 primary, no candidate received a majority of votes, so the top two candidates faced each other in a runoff; Perdue narrowly won against Kingston in the runoff primary election on July 22 with 50.9% of the vote.Michelle Nunn, CEO of Points of Light and the daughter of former U.S. Senator Sam Nunn, won the Democratic nomination. Other declared Democratic candidates included former State Senator Steen Miles, psychiatrist Branko Radulovacki, and former US Army Ranger Todd Robinson. Amanda Swafford, a former Flowery Branch, Georgia, city councilwoman, received the Libertarian Party of Georgia nomination.

Hawaii (special)
Daniel Inouye, the second longest serving United States Senator in U.S. history, died on December 17, 2012, after respiratory complications. Hawaii law allows the Governor of Hawaii, to appoint an interim Senator "who serves until the next regularly-scheduled general election, chosen from a list of three prospective appointees that the prior incumbent's political party submits". Governor Neil Abercrombie did so, selecting Lieutenant Governor Brian Schatz to fill the Senate seat. Inouye had been re-elected in 2010 with 72% of the vote. Schatz was challenged in the Democratic primary by Congresswoman Colleen Hanabusa of Hawaii's 1st congressional district, who Inouye had hoped would be his successor. Schatz defeated Hanabusa in the primary with 48.5% to 47.8%.Campbell Cavasso, former State Representative and nominee for the U.S. Senate in 2004 and 2010, was the Republican nominee.

Idaho
One-term incumbent Republican Jim Risch had been elected with 58% of the vote in 2008. Risch sought a second term.Boise attorney Nels Mitchell was the Democratic nominee.

Illinois
Three-term incumbent and Senate Majority Whip Democrat Dick Durbin had been re-elected with 68% of the vote in 2008. Durbin ran for a fourth term.State Senator Jim Oberweis was the Republican nominee. He defeated primary challenger Doug Truax with 56% of the vote.

Iowa
Five-term incumbent Democrat Tom Harkin had been re-elected with 63% of the vote in 2008. Harkin announced on January 26, 2013, that he would not seek a sixth term. Congressman Bruce Braley was the Democratic nominee.State Senator Joni Ernst was the Republican nominee.Doug Butzier, who was the Libertarian Party's nominee, died in a plane crash on October 13, 2014, but still appeared on the ballot.

Kansas
Three-term incumbent Republican Pat Roberts had been re-elected with 60% of the vote in 2008. Roberts sought a fourth term. He faced a primary challenge from radiologist Milton Wolf, a conservative Tea Party supporter. Roberts defeated Wolf in the Republican primary by 48% to 41%. Shawnee County District Attorney Chad Taylor won the Democratic nomination. Randall Batson from Wichita was on the general election ballot as a Libertarian. Also, Greg Orman qualified for the ballot as an independent.On September 3, Taylor announced he was dropping out of the election, leading to speculation that Democrats would support Orman's candidacy. On September 18, the Kansas Supreme Court ruled that Taylor's name had to be removed from the ballot.

Kentucky
Five-term Republican incumbent and Senate Minority Leader Mitch McConnell had been re-elected with 53% of the vote in 2008. McConnell sought re-election to a sixth term. McConnell defeated businessman Matt Bevin in the Republican primary on May 20.Kentucky Secretary of State Alison Lundergan Grimes, with support from much of Kentucky's Democratic leadership, won the Democratic primary. Actress Ashley Judd publicly claimed to be considering a run for the Democratic nomination, but ultimately decided against it.Ed Marksberry pursued an independent bid after dropping out of the Democratic field in September 2013.

Louisiana
Three-term incumbent Democrat Mary Landrieu had been re-elected with 52% of the vote in 2008. Landrieu ran for a fourth term.Louisiana uses a unique jungle primary system that eschews primaries in favor of run-off elections between the top two candidates; this run-off can be avoided if the winning candidate receives over 50% of the vote. Democrats Wayne Ables, Vallian Senegal, and William Waymire ran against Landrieu in the election, as did Republicans Bill Cassidy (representative of Louisiana's 6th congressional district), Thomas Clements (small business owner), and retired Air Force Colonel Rob Maness. Electrical Engineer Brannon McMorris ran as a Libertarian.Because Republican candidate Maness took almost 14% of the votes in the primary, there was a runoff election on December 6, 2014, between Landrieu (42%) and Cassidy (41%). Cassidy won the runoff with 56% of the vote.

Maine
Three-term incumbent Republican Susan Collins was seeking a fourth term. Shenna Bellows, former executive director of the American Civil Liberties Union of Maine, was the Democratic nominee.

Massachusetts
Five-term incumbent and 2004 Democratic presidential nominee John Kerry had been re-elected with 66% of the vote in 2008. Kerry resigned in early 2013 to become U.S. Secretary of State. Governor Deval Patrick appointed Democrat Mo Cowan to the seat. Democratic Congressman Ed Markey beat Republican Gabriel E. Gomez in the June 25, 2013 special election by a 55% to 45% margin. Markey had served the remainder of Kerry's term before running for re-election to a first full term in 2014. Hopkinton Town Selectman Brian Herr was the Republican nominee.

Michigan
Six-term incumbent Senator and Chairman of the Armed Services Committee Democrat Carl Levin, the longest-serving senator in Michigan's history, had been re-elected with 63% of the vote in 2008. Levin announced on March 7, 2013, that he would not seek re-election.
Three term Democratic Representative Gary Peters of MI-14 was the Democratic nominee. He defeated Republican former Secretary of State Terri Lynn Land who was unopposed for the Republican nomination.

Minnesota
One-term incumbent Democrat Al Franken unseated one-term Republican Norm Coleman by 312 votes in a contested three-way race with 42% of the vote in 2008; the third candidate in the race, former Senator Dean Barkley of the Independence Party of Minnesota, won 15% of the vote. Franken sought re-election. State Representative Jim Abeler, St. Louis County Commissioner Chris Dahlberg, co-CEO of Lazard Middle Market Mike McFadden, bison farmer and former hair salon owner Monti Moreno, state Senator Julianne Ortman, and U.S. Navy reservist Phillip Parrish ran for the Republican nomination. McFadden won the Republican primary and was the Republican nominee in the general election.Hannah Nicollet of the Independence Party of Minnesota also ran.

Mississippi
Six-term incumbent Republican Thad Cochran, re-elected with 62% of the vote in 2008, ran for re-election. Cochran was the last incumbent Senator to declare his plans, leading to widespread speculation that he might announce his retirement.Tea Party candidate Chris McDaniel, a conservative Mississippi state senator, ran against Cochran in the Republican primary. Neither McDaniel nor Cochran was able to get 50% of the vote in the first round of the primary, so a runoff election was held June 24. Cochran won the runoff election by 51% to 49%, with the help of Democratic voters eligible to vote in the state's open primaries who chose Cochran as their preferred Republican. McDaniel filed a lawsuit to challenge the results of the run-off, but the challenge was rejected on appeal by the Supreme Court of Mississippi.Former Congressman Travis Childers was the Democratic nominee.

Montana
Six-term incumbent Democrat Max Baucus, the longest-serving senator in Montana's history, had been re-elected with 73% of the vote in 2008. Baucus announced on April 23, 2013, that he would retire in 2014, rather than seek re-election to a seventh term. Baucus was appointed as the United States Ambassador to China, leading him to resign from the Senate in February 2014.Following Baucus's confirmation as ambassador, Governor Steve Bullock appointed the Lieutenant Governor John Walsh to fill the vacant senate seat. Former Lieutenant Governor John Bohlinger was defeated by Walsh in the Democratic primary. Amid controversy over alleged plagiarism in a 2007 research paper, Walsh pulled out of the race. The Montana Democratic Party held a special nominating convention on August 16 to choose a replacement for Walsh. First-term State Representative Amanda Curtis won the nomination, thereby becoming the new Democratic nominee.Congressman Steve Daines won the Republican nomination over state Representative Champ Edmunds of Missoula and David Leaser of Kalispell.

Nebraska
One-term incumbent Republican Mike Johanns had been elected with 58% of the vote in 2008. He did not seek a second term. Term limited Republican Governor Dave Heineman considered running for the Republican nomination, but ultimately decided not to do so. Former state Treasurer Shane Osborn, attorney Bart McLeay, banker Sid Dinsdale, and Midland University President Ben Sasse ran for the Republican nomination. In the May 13 primary, Sasse won the Republican nomination.
Trial lawyer David Domina was the Democratic nominee.

New Hampshire
One-term incumbent Democrat Jeanne Shaheen had been elected with 52% of the vote in 2008. Shaheen ran for re-election. Shaheen defeated Republican nominee Scott Brown, who had represented neighboring Massachusetts in the Senate from 2010 to 2013.

New Jersey
Incumbent Democrat Frank Lautenberg had been re-elected with 56% of the vote in 2008. After announcing he would not seek re-election, Lautenberg died in June 2013, aged 89, after a long period of ill health.Newark Mayor Cory Booker, a Democrat, defeated Republican nominee Steve Lonegan by 55%-to-45% in a 2013 special election to replace interim Republican appointee Jeffrey Chiesa. Booker ran for re-election to a full term in 2014. 1978 and 1982 Republican candidate and political operative Jeff Bell was the Republican nominee.

New Mexico
One-term incumbent Democrat Tom Udall had been elected with 61% of the vote in 2008. Former Doña Ana County Republican Party Chairman David Clements and former New Mexico Republican Party Chairman Allen Weh sought the Republican nomination. Weh won the June 3 primary but lost to Udall in the general election.

North Carolina
One-term incumbent Democrat Kay Hagan had been elected with 53% of the vote against incumbent Republican Elizabeth Dole in 2008. Hagan was seeking re-election.State House Speaker Thom Tillis was the Republican nominee. Sean Haugh won the Libertarian nomination.

Oklahoma
There were 2 elections in Oklahoma, due to the resignation of Tom Coburn.

Oklahoma (regular)
Three-term incumbent Republican Jim Inhofe had been re-elected with 57% of the vote in 2008. Inhofe sought re-election. Matt Silverstein, an insurance agency owner, ran for the Democratic nomination.

Oklahoma (special)
Two-term incumbent Republican Tom Coburn had been re-elected with 71% of the vote in 2010, and was not scheduled to be up for election again until 2016. However, Coburn announced his intention to resign at the end of the 113th Congress. A special election to fill his seat took place in November 2014, concurrent with the other Senate elections. Congressman James Lankford was the Republican nominee. State Senator Connie Johnson was the Democratic nominee.

Oregon
One-term incumbent Democrat Jeff Merkley was narrowly elected with 49% of the vote in 2008. Merkley was running for a second term. State representative Jason Conger, attorney Tim Crawley, IT consultant Mark Callahan, neurosurgeon Dr. Monica Wehby, and former Linn County Republican Chair Jo Rae Perkins all ran for the Republican nomination, with Wehby ultimately winning the nomination in the May 20 primary.

Rhode Island
Three-term incumbent Democrat Jack Reed had been re-elected with 73% of the vote in 2008. Reed defeated Republican nominee Mark Zaccaria in the 2014 election.

South Carolina
There were 2 elections in South Carolina, due to the resignation of Jim DeMint.

South Carolina (regular)
Two-term Republican Lindsey Graham had been re-elected with 58% of the vote in 2008. Graham won the Republican nomination over a field that included state senator Lee Bright. State Senator Brad Hutto won the Democratic nomination.

South Carolina (special)
Jim DeMint had been elected to a second term in 2010, but resigned from the Senate in January 2013 to become president of The Heritage Foundation, a conservative think-tank. Governor Nikki Haley appointed Congressman Tim Scott as DeMint's replacement. Scott, an African-American, was the Republican nominee to serve out the remainder of DeMint's term. Scott is the first African-American Republican since shortly after Reconstruction to represent a Southern state. Richland County Councilwoman Joyce Dickerson won the Democratic nomination.

South Dakota
Three-term incumbent Democrat Tim Johnson had been re-elected with 63% of the vote in 2008. Johnson announced on March 26, 2013, that he would not run for re-election. Former Congressional aide Rick Weiland was the Democratic nominee.Among Republicans, former two-term Governor Mike Rounds announced his candidacy for the GOP nomination on November 29, 2012. Rounds won the Republican nomination over state senator Larry Rhoden, state representative Stace Nelson, and physician Annette Bosworth.Former Republican U.S. Senator Larry Pressler and Republican State Senator Gordon Howie ran as independents. Pressler did not commit to caucusing with either party, while Howie said he would caucus with the Senate Republicans.

Tennessee
Two-term incumbent Republican Lamar Alexander had been re-elected with 65% of the vote in 2008. Alexander sought re-election to a third term. On August 7, 2014, Alexander won the Republican nomination over six challengers, including State Representative Joe Carr.On November 4, 2014, Alexander faced Democratic nominee Gordon Ball, Libertarian Party nominee Joshua James, Constitution Party nominee Joe Wilmothm, and independent Danny Page also ran in the general election.

Texas
Two-term incumbent Republican John Cornyn, the Senate Minority Whip, had been re-elected with 55% of the vote in 2008. Cornyn sought re-election, and won the 2014 Republican primary with 59% of the vote. David Alameel, a dentist, and Kesha Rogers, a volunteer for The Lyndon LaRouche Policy Institute, faced each other in a run-off election for the Democratic nomination. Alameel won the run-off and was the Democratic nominee.

Virginia
One-term incumbent Democrat Mark Warner had been elected with 65% of the vote in 2008; he sought re-election. Ed Gillespie, former RNC Chairman and presidential adviser, ran for the Republican nomination. Robert Sarvis, the Libertarian nominee for Governor in 2013, also ran.

West Virginia
Five-term incumbent Democrat Jay Rockefeller had been re-elected with 64% of the vote in 2008. He announced on January 11, 2013, that he would not seek re-election to a sixth term. Secretary of State Natalie Tennant won the Democratic nomination.On November 26, 2012, Republican Congresswoman Shelley Moore Capito announced her plans to run for the seat, in hopes of becoming the first Republican Senator elected from West Virginia since 1956. Moore Capito won the Republican nomination and the general election, the first woman to serve as United States Senator from West Virginia.

Wyoming
Three-term incumbent Republican Mike Enzi had been re-elected with 76% of the vote in 2008. Enzi sought re-election. Liz Cheney, daughter of former Vice President Dick Cheney, briefly entered the race for the Republican nomination, but dropped her bid in January 2014. On August 19, Enzi won the Republican primary election with 82% of the vote, and Democrat Charlie Hardy, a former Catholic priest, won his party's primary election with 48% of the vote.

See also
2014 United States elections
2014 United States gubernatorial elections
2014 United States House of Representatives elections
113th United States Congress
114th United States Congress

Notes
Passage 3:
Standing Rules of the United States Senate
The Standing Rules of the Senate are the parliamentary procedures adopted by the United States Senate that govern its procedure. The Senate's power to establish rules derives from Article One, Section 5 of the United States Constitution: "Each House may determine the rules of its proceedings ..." There are currently forty-five rules, with the latest revision adopted on January 24, 2009. The most recent addition of a new rule occurred in 2006, when The Legislative Transparency and Accountability Act of 2006 introduced a 44th rule on earmarks. The stricter rules are often waived by unanimous consent.

Outline of rules
Quorum
The Constitution provides that a majority of the Senate constitutes a quorum to do business. Under the rules and customs of the Senate, a quorum is always assumed to be present unless a quorum call explicitly demonstrates otherwise. Any senator may request a quorum call by "suggesting the absence of a quorum"; a clerk then calls the roll of the Senate and notes which members are present. In practice, senators almost always request quorum calls not to establish the presence of a quorum, but to temporarily delay proceedings without having to adjourn the session. Such a delay may serve one of many purposes; often, it allows Senate leaders to negotiate compromises off the floor or to allow senators time to come to the Senate floor to make speeches without having to constantly be present in the chamber while waiting for the opportunity. Once the need for a delay has ended, any senator may request unanimous consent to rescind the quorum call.

Debate
The Senate is presided over by the Presiding Officer, either the President of the Senate (the Vice President) or more often the President pro tempore (in special cases the Chief Justice presides). During debates, senators may speak only if called upon by the Presiding Officer. The Presiding Officer is, however, required to recognize the first senator who rises to speak. Thus, the Presiding Officer has little control over the course of debate. Customarily, the majority leader and minority leader are accorded priority during debates, even if another senator rises first. All speeches must be addressed to the Presiding Officer, using the words "Mr. President" or "Madam President". Only the Presiding Officer may be directly addressed in speeches; other members must be referred to in the third person. In most cases, senators refer to each other not by name, but by state, using forms such as "the senior senator from Virginia" or "the junior senator from California".
There are very few restrictions on the content of speeches, and there is no requirement that speeches be germane to the matter before the Senate.
The Senate Rules provide that no senator may make more than two speeches on a motion or bill on the same legislative day (a legislative day begins when the Senate convenes and ends when it adjourns; hence, it does not necessarily coincide with the calendar day). The length of these speeches is not limited by the rules; thus, in most cases, senators may speak for as long as they please. Often, the Senate adopts unanimous consent agreements imposing time limits. In other cases (for example, for the budget process), limits are imposed by statute. In general, however, the right to unlimited debate is preserved.

Filibuster
The filibuster is an obstructionary tactic used to defeat bills and motions by prolonging debate indefinitely. A filibuster may entail, but does not actually require, long speeches, dilatory motions, and an extensive series of proposed amendments. The longest filibuster speech in the history of the Senate was delivered by Strom Thurmond, who spoke for over twenty-four hours in an unsuccessful attempt to block the passage of the Civil Rights Act of 1957. The Senate may end a filibuster by invoking cloture. In most cases, cloture requires the support of three-fifths of the Senate. Cloture is invoked very rarely, particularly because bipartisan support is usually necessary to obtain the required supermajority. If the Senate does invoke cloture, debate does not end immediately; instead, further debate is limited to thirty additional hours unless increased by another three-fifths vote.

Closed session
On occasion, the Senate may go into what is called a secret or closed session. During a closed session, the chamber doors are closed and the galleries are completely cleared of anyone not sworn to secrecy, not instructed in the rules of the closed session, or not essential to the session. Closed sessions are rare and are usually held only under certain circumstances in which the Senate is discussing sensitive subject matter, such as information critical to national security, private communications from the president, or discussions of Senate deliberations during impeachment trials. Any Senator has the right to call a closed session as long as the motion is seconded.

Voting
When debate concludes, the motion in question is put to a vote. In many cases, the Senate votes by voice vote; the presiding officer puts the question, and Members respond either "Aye!" (in favor of the motion) or "No!" (against the motion). The presiding officer then announces the result of the voice vote. Any senator, however, may challenge the presiding officer's assessment and request a recorded vote. The request may be granted only if it is seconded by one-fifth of the senators present. In practice, however, senators second requests for recorded votes as a matter of courtesy. When a recorded vote is held, the clerk calls the roll of the Senate in alphabetical order; each senator responds when their name is called. Senators who miss the roll call may still cast a vote as long as the recorded vote remains open. The vote is closed at the discretion of the presiding officer but must remain open for a minimum of fifteen minutes. If the vote is tied, the Vice President, if present, is entitled to a casting vote. If the Vice President is not present, however, the motion is resolved in the negative.

Committees
Tasks in the Senate are divided among sixteen standing committees, four select committees, four joint committees, and occasionally temporary committees. Senate rules establish the policy jurisdictions of each committee; for example, the Committee on Foreign Relations deals with all matters relating to foreign policy. Committees act, in effect, as "little legislatures", monitoring ongoing governmental operations, identifying issues suitable for legislative review, gathering and evaluating information, and recommending courses of action to their parent body in matters relating to their jurisdiction. Senate rules give committees significant gatekeeping authority over legislation that falls under their jurisdiction, with proposed bills submitted to the relevant committee, which can hold hearings, "mark up" bills, consolidate bills into a "clean bill", or ignore the bill altogether (there exist some workarounds for Senators to circumvent committees, but in general Senators work through the committee system).The size of each standing committee is established by Senate rules. The makeup of committees are established through inter-party negotiations before each new Congress, with the percentage of a party's representation within the Senate determining the percentage of seats it will have on each committee.

Reconciliation
Legislation affecting spending, revenues, and the federal debt limit is governed under a special rules process called "Reconciliation" that prohibits filibusters by limiting debate to twenty hours. Congress can pass up to three reconciliation bills per year, with each bill addressing one of the topics of reconciliation (revenue, spending, or the debt limit). However, if Congress passes a reconciliation bill affecting more than one of those topics, it cannot pass another reconciliation bill later in the year affecting one of the topics addressed by the previous reconciliation bill. In practice, reconciliation bills have usually been passed once per year at most. Reconciliation cannot be used to enact or rescind discretionary spending (which is controlled through the annual appropriations process) or adjust Social Security spending, and is limited by the Byrd Rule, which allows senators to block provisions that are "extraneous" to spending, revenues, or the debt limit.Reconciliation was created by the Congressional Budget Act of 1974, and significantly altered with the introduction of the Byrd Rule in 1985 (amended in 1990). Originally infrequently used (it did not see first use until 1980).

Nominations
Selected public positions in the United States are appointed by the president but require Senate approval. Senate rule XXXI governs the Senate process for considering the president's nominations.
For most positions the nomination is passed first to a Senate committee for review. Generally it is the Senate committee with jurisdiction over the topic or department related to the position to be filled.A public hearing by the committee is possible. Historically about half of civilian appointees were approved without a hearing. After consideration, the committee can report a favorable recommendation, or an unfavorable recommendation, or it can report no recommendation. It can also fail to act. To simplify the process, and with the support of the committee, the Senate by unanimous consent might discharge a nomination from the committee without the committee having acted.It is up to the leadership of the Senate to then place the nomination on the Senate calendar for a vote in executive session. Some nominations are passed by unanimous consent. The leadership may delay putting a nomination on the calendar, in which case it may not be acted upon.

Nomination Time Limit
Paragraph 6 of rule XXXI specifies that if final action has not been taken before Congress adjourns the nomination is returned to the President. By the same rule nominations are returned when the Senate goes into recess for more than 30 days. However, in modern practice some nominations may stay active over long recesses if the Senate holds pro forma sessions during recess or agrees to suspend the rule by unanimous consent. When a nomination is returned without action, the president may nominate a different person or re-nominate the same person.

Rules by number
There are currently forty-four Standing Rules of the Senate:
SR Rule I: Appointment of a Senator to the Chair
SR Rule II: Presentation of Credentials and Questions of Privilege
SR Rule III: Oaths
SR Rule IV: Commencement of Daily Sessions
SR Rule V: Suspension and Amendment of the Rules
SR Rule VI: Quorum – Absent Senators May Be Sent For
SR Rule VII: Morning Business
SR Rule VIII: Order of Business
SR Rule IX: Messages
SR Rule X: Special Orders
SR Rule XI: Papers – Withdrawal, Printing, Reading of, and Reference
SR Rule XII: Voting Procedure
SR Rule XIII: Reconsideration
SR Rule XIV: Joint Resolutions, and Preambles Thereto
SR Rule XV: Amendments and Resolutions
SR Rule XVI: Appropriations and Amendments to General Appropriation Bills
SR Rule XVII: Reference to Committees; Motions to Discharge; Reports of Committees; and Hearings Available
SR Rule XVIII: Business Continued from Session to Session
SR Rule XIX: Debate
SR Rule XX: Questions for Order
SR Rule XXI: Session with Closed Doors
SR Rule XXII: Precedence of Motions
SR Rule XXIII: Privilege of the Floor
SR Rule XXIV: Appointments of Committee
SR Rule XXV: Standing Committees
SR Rule XXVI: Committee Procedure
SR Rule XXVII: Committee Staff
SR Rule XXVIII: Conference Committees; Reports; Open Meetings
SR Rule XXIX: Executive Sessions
SR Rule XXX: Executive Session – Proceedings on Treaties
SR Rule XXXI: Executive Session – Proceedings on Nominations
SR Rule XXXII: The President Furnished with Copies of Record Executive Sessions
SR Rule XXXIII: Senate Chamber – Senate Wing of the Capitol
SR Rule XXXIV: Public Financial Disclosure
SR Rule XXXV: Gifts
SR Rule XXXVI: Outside Earned Income
SR Rule XXXVII: Conflict of Interest
SR Rule XXXVIII: Prohibition of Unofficial Office Accounts
SR Rule XXXIX: Foreign Travel
SR Rule XL: Franking Privilege and Radio and Television Studios
SR Rule XLI: Political Fund Activity; Definitions
SR Rule XLII: Employment Practices
SR Rule XLIII: Representation by Members
SR Rule XLIV: Congressionally Directed Spending and Related ItemsThe latest change was the introduction in 2006 of a 44th rule on earmarks, by the Legislative Transparency and Accountability Act.
Passage 4:
Majority leader
In U.S. politics (as well as in some other countries utilizing the presidential system), the majority floor leader is a partisan position in a legislative body.

United States
In the federal Congress of the United States, the roles of the House Majority Leader and the Senate Majority Leader differ slightly. At the state level, the majority leader of a given state legislative chamber usually performs a similar role to that of their federal counterpart.

Senate
In the Senate, the Vice President of the United States is officially the President of the Senate and the President pro tempore serves as the President of the Senate in the absence of the Vice President. However, in reality, the Vice President seldom enters the Senate, let alone directly presides over the chamber, unless a tied vote is expected, and the President pro tempore has become a ceremonial role deprived of any leadership ability.
Thus, the Majority Leader is seen as the de facto leader of the Senate, especially in modern times, and thus, in accordance with Senate rules, the Presiding Officer of the day gives the Majority Leader priority in obtaining recognition to speak on the floor of the Senate and they determine which bills get voted on. The Majority Leader is seen as the chief spokesperson for their party in the Senate.In the United States Senate, the current Majority Leader is Chuck Schumer, who assumed the office on January 20, 2021.

In the House of Representatives the Majority Leader's presence and power often depends on the session, particularly during the 2008 election cycle. In some sessions, the Majority Leader takes precedence over the Speaker as House leader and legislative party leader either by force (which usually occurs when the Speaker of the House is unpopular) or because the Speaker of the House voluntarily surrenders power to the Majority Leader. In most sessions, the Speaker of the House takes precedence as house leader and party leader, with the Majority Leader being irrelevant and largely powerless outside the fact they might be Speaker of the House one day. Except, of course, for the fact that The Majority Leader (as well as the Speaker and the Minority Leader) are the only members of the House that can speak on the floor for an unlimited amount of time and cannot be interrupted by the chair.
In the United States House of Representatives, the current Majority Leader is Steve Scalise, who assumed office on January 3, 2023.

See also
Floor leader
Minority leader
Passage 5:
Party leaders of the United States Senate
The positions of majority leader and minority leader are held by two United States senators and members of the party leadership of the United States Senate. They serve as the chief spokespersons for their respective political parties holding the majority and the minority in the United States Senate. They are each elected as majority leader and minority leader by the senators of their party caucuses: the Senate Democratic Caucus and the Senate Republican Conference.
By Senate precedent, the presiding officer gives the majority leader priority in obtaining recognition to speak on the floor of the Senate. The majority leader serves as the chief representative of their party in the Senate, and is considered the most powerful member of the Senate. They also serve as the chief representative of their party in the entire Congress if the House of Representatives, and thus the office of the speaker of the House, is controlled by the opposition party. The Senate's executive and legislative business is also managed and scheduled by the majority leader.
The assistant majority leader and assistant minority leader of the United States Senate, commonly called whips, are the second-ranking members of each party's leadership. The main function of the majority and minority whips is to gather votes of their respective parties on major issues. As the second-ranking members of Senate leadership, if there is no floor leader present, the whip may become acting floor leader.

Current floor leaders
The Senate is currently composed of 49 Republicans, 48 Democrats, and 3 independents; all the independents caucus with the Democrats.
The current leaders are Senators Chuck Schumer (D) of New York and Mitch McConnell (R) of Kentucky. The current assistant leaders, or whips, are Senators Dick Durbin (D) of Illinois and John Thune (R) of South Dakota.

History
By at least 1850, parties in each chamber of Congress began naming chairs, and while conference and caucus chairs carried very little authority, the Senate party floor leader positions arose from the position of conference chair. Senate Democrats began the practice of electing their floor leaders in 1920 while they were in the minority. John W. Kern was a Democratic senator from Indiana. While the title was not official, the Senate website identifies Kern as the first Senate party leader, serving in that capacity from 1913 through 1917 (and in turn, the first Senate Democratic leader), while serving concurrently as chairman of the Senate Democratic Caucus. In 1925, the Republicans (who were in the majority at the time) also adopted this language when Charles Curtis became the first (official) majority leader, although his immediate predecessor Henry Cabot Lodge is considered the first (unofficial) Senate majority leader.
The United States Constitution designates the Vice President of the United States as president of the Senate. The Constitution also calls for a president pro tempore, to serve as the presiding officer when the president of the Senate (the vice president) is absent. In practice, neither the vice president nor the president pro tempore—customarily the most senior (longest-serving) senator in the majority party—actually presides over the Senate on a daily basis; that task is given to junior Senators of the majority party. Since the vice president may be of a different party from the majority and is not a Senate member subject to discipline, the rules of procedure of the Senate give the Vice President no power beyond the presiding role. For these reasons, it is the majority leader who, in practice, manages the Senate. This is in contrast to the House of Representatives, where the elected speaker of the House has a great deal of discretionary power and generally presides over votes on legislative bills.

List of party leaders
The Democratic Party first selected a leader in 1920. The Republican Party first formally designated a leader in 1925.

See also
Party leaders of the United States House of Representatives
President pro tempore of the United States Senate
Vice President of the United States (President of the United States Senate)
Party divisions of United States Congresses
List of political parties in the United States

Notes
Passage 6:
Party leaders of the United States Senate
The positions of majority leader and minority leader are held by two United States senators and members of the party leadership of the United States Senate. They serve as the chief spokespersons for their respective political parties holding the majority and the minority in the United States Senate. They are each elected as majority leader and minority leader by the senators of their party caucuses: the Senate Democratic Caucus and the Senate Republican Conference.
By Senate precedent, the presiding officer gives the majority leader priority in obtaining recognition to speak on the floor of the Senate. The majority leader serves as the chief representative of their party in the Senate, and is considered the most powerful member of the Senate. They also serve as the chief representative of their party in the entire Congress if the House of Representatives, and thus the office of the speaker of the House, is controlled by the opposition party. The Senate's executive and legislative business is also managed and scheduled by the majority leader.
The assistant majority leader and assistant minority leader of the United States Senate, commonly called whips, are the second-ranking members of each party's leadership. The main function of the majority and minority whips is to gather votes of their respective parties on major issues. As the second-ranking members of Senate leadership, if there is no floor leader present, the whip may become acting floor leader.

Current floor leaders
The Senate is currently composed of 49 Republicans, 48 Democrats, and 3 independents; all the independents caucus with the Democrats.
The current leaders are Senators Chuck Schumer (D) of New York and Mitch McConnell (R) of Kentucky. The current assistant leaders, or whips, are Senators Dick Durbin (D) of Illinois and John Thune (R) of South Dakota.

History
By at least 1850, parties in each chamber of Congress began naming chairs, and while conference and caucus chairs carried very little authority, the Senate party floor leader positions arose from the position of conference chair. Senate Democrats began the practice of electing their floor leaders in 1920 while they were in the minority. John W. Kern was a Democratic senator from Indiana. While the title was not official, the Senate website identifies Kern as the first Senate party leader, serving in that capacity from 1913 through 1917 (and in turn, the first Senate Democratic leader), while serving concurrently as chairman of the Senate Democratic Caucus. In 1925, the Republicans (who were in the majority at the time) also adopted this language when Charles Curtis became the first (official) majority leader, although his immediate predecessor Henry Cabot Lodge is considered the first (unofficial) Senate majority leader.
The United States Constitution designates the Vice President of the United States as president of the Senate. The Constitution also calls for a president pro tempore, to serve as the presiding officer when the president of the Senate (the vice president) is absent. In practice, neither the vice president nor the president pro tempore—customarily the most senior (longest-serving) senator in the majority party—actually presides over the Senate on a daily basis; that task is given to junior Senators of the majority party. Since the vice president may be of a different party from the majority and is not a Senate member subject to discipline, the rules of procedure of the Senate give the Vice President no power beyond the presiding role. For these reasons, it is the majority leader who, in practice, manages the Senate. This is in contrast to the House of Representatives, where the elected speaker of the House has a great deal of discretionary power and generally presides over votes on legislative bills.

List of party leaders
The Democratic Party first selected a leader in 1920. The Republican Party first formally designated a leader in 1925.

See also
Party leaders of the United States House of Representatives
President pro tempore of the United States Senate
Vice President of the United States (President of the United States Senate)
Party divisions of United States Congresses
List of political parties in the United States

Notes
Passage 7:
2010 United States House of Representatives elections
The 2010 United States House of Representatives elections were held on November 2, 2010, as part of the 2010 midterm elections during President Barack Obama's first term in office. Voters of the 50 U.S. states chose 435 U.S. Representatives to serve in the 112th United States Congress. Also, voters of the U.S. territories, commonwealths and District of Columbia chose their non-voting delegates. U.S. Senate elections and various state and local elections were held on the same date.
Democrats regained control of the U.S. House they had lost in the 2004 midterm election, picking up a net total of 63 seats and erasing the gains Republicans made in 2004 and 2006. Although the sitting President's party usually loses seats in a midterm election, the 2010 election resulted in the highest losses by a party in a House midterm election since 1938, as well as the largest House swing since 1948. In total, 52 House Democrats were defeated, including 34 freshman and sophomore representatives.
Republicans made their largest gain in House seats since 1938. Three Democratic committee chairmen were defeated: transportation chairman Jim Oberstar of Minnesota, armed services chairman Ike Skelton of Missouri, and budget chairman John Spratt of South Carolina. Democrats made three pick-ups, winning an open seat in Delaware and defeating Republican incumbents in Hawaii and Louisiana.
The heavy Democratic Party losses in 2010 were attributed to anger at President Obama, opposition to the Affordable Care Act and American Recovery and Reinvestment Act, large budget deficits, and the weak economy.As of 2023, this is the last election in which Democrats won a seat in Arkansas.

Following the 2004 elections, Republicans took control of the House as well as the Senate. In the 2008 elections, which coincided with Democrat Barack Obama's victory over Republican John McCain for the presidency, Democrats increased their majorities in both chambers. Of the 435 congressional districts, 242 were carried by Obama, while 193 voted for McCain. Of the districts Obama won, 34 elected a Republican to the House, while 49 of the districts McCain won elected a Democrat.

Democratic gains were marked by a 63-seat pickup in the House to take control of that chamber, as well as their gain of six Senate seats, signifying a dramatic rollback of recent Republican gains. In the election, Republicans won their greatest number of House seats since 1946. This has been attributed to the continued economic recession, as well as President Obama's controversial stimulus and health care reform bills. Republicans also took control of 29 of the 50 state governorships and gained 690 seats in state legislatures, to hold their greatest number since the 1928 elections.Republicans also made historic gains in state legislatures, adding more than 675 state legislative seats, by far surpassing their state-legislative gains in 1994. Republicans gained control of dozens of state legislative chambers, and took control of "seven more legislatures outright than they did after 1994 and the most since 1952." Republicans picked up control of the Alabama Legislature for the first time since Reconstruction; control of the North Carolina Senate for the first time since 1870; and control of the Minnesota Senate for the first time since the state returned to partisan elections in 1974.The Great Lakes region, which until then had recently favored the Democratic Party, went strongly Republican. In California and the Pacific Northwest, however, the Democrats retained the upper hand. The biggest change in 2010 occurred in the Southeastern United States, which had previously been roughly evenly split between Democrats and Republicans for everything except for president. Just one white Democrat from the Deep South won reelection to the US House in 2010. Prior to 2010, many white conservative southerners had voted Republican for president, but Democratic for other offices.

Results summary
Federal
Sources: House Clerk – Statistics of the Congressional Election, 2010

Voter demographics
Source: CNN exit poll

Retiring incumbents
37 incumbents retired.

Democrats
17 incumbent Democrats retired.

Alabama 7: Artur Davis: To run for Governor of Alabama.
Arkansas 1: Marion Berry: Retired due to health concerns.
Arkansas 2: Vic Snyder: Retired to spend more time with family.
California 33: Diane Watson: Retired; "It should be a seat inherited by someone who can represent everyone in this district."
Florida 17: Kendrick Meek: To run for U.S. Senator.
Indiana 8: Brad Ellsworth: To run for U.S. Senator.
Kansas 3: Dennis Moore: Retired; "Time for a new generation of leadership."
Louisiana 3: Charlie Melançon: To run for U.S. Senator.
Massachusetts 10: Bill Delahunt: Retired; "Life is about change. I think it's healthy. It's time."
Michigan 1: Bart Stupak: Retired; "I've accomplished what I want to do."
New Hampshire 2: Paul Hodes: To run for U.S. Senator.
Pennsylvania 7: Joe Sestak: To run for U.S. Senator.
Rhode Island 1: Patrick J. Kennedy: Retired to "[take] a new direction."
Tennessee 6: Bart Gordon: Retired; "…it's time for a new chapter."
Tennessee 8: John S. Tanner: Retired; decided 20 years was long enough.
Washington 3: Brian Baird: Retired, to pursue other options.
Wisconsin 7: Dave Obey: Retired; "But even more frankly, I am bone tired." Media reports indicated Obey's future plans included joining a DC lobbying firm run by former Representative Dick Gephardt.

Republicans
19 incumbent Republicans retired.

Arkansas 3: John Boozman: to run for U.S. Senator.
Arizona 3: John Shadegg: to pursue other interests.
California 19: George Radanovich: to put family obligations first.
Delaware at-large: Mike Castle: to run for U.S. Senator.
Florida 5: Ginny Brown-Waite: due to health issues.
Florida 12: Adam Putnam: to run for Florida Commissioner of Agriculture.
Florida 21: Lincoln Díaz-Balart: to return to law practice.
Georgia 7: John Linder
Illinois 10: Mark Kirk: to run for U.S. Senator.
Indiana 4: Steve Buyer: due to wife's illness
Kansas 1: Jerry Moran: to run for U.S. Senator.
Kansas 4: Todd Tiahrt: to run for U.S. Senator.
Michigan 2: Pete Hoekstra: to run for Governor of Michigan.
Michigan 3: Vern Ehlers
Missouri 7: Roy Blunt: to run for U.S. Senator.
Oklahoma 5: Mary Fallin: to run for Governor of Oklahoma.
South Carolina 1: Henry E. Brown Jr.: to spend more time with his family.
South Carolina 3: Gresham Barrett: to run for Governor of South Carolina.
Tennessee 3: Zach Wamp: to run for Governor of Tennessee.

Incumbents defeated
There were nine Democrats who survived reelection in the 1994 Republican Revolution, but were defeated this year.

Lost renomination
Democrats
Two Democrats lost renomination. One seat was held by Democrats, while the other flipped to Republicans.

Michigan 13: Carolyn Cheeks Kilpatrick lost to Hansen Clarke.
West Virginia 1: Alan Mollohan lost to Mike Oliverio, who lost the general election to David McKinley.

Republicans
Two Republicans lost renomination. Both seats were eventually held by Republicans.

Alabama 5: Parker Griffith (first elected in 2008 as a Democrat; switched parties in 2009) lost to Mo Brooks.
South Carolina 4: Bob Inglis lost to Trey Gowdy.

Lost re-election
54 incumbents lost in the general election; all but two were Democrats. Many of the Democrats who lost had been initially elected in the Democratic wave years of 2006 and 2008, and several others were longtime incumbents from the southeast.

Democrats
52 Democrats lost re-election.

Alabama 2, Bobby Bright (first elected in 2008) lost to Martha Roby
Arizona 1, Ann Kirkpatrick (first elected in 2008) lost to Paul Gosar
Arizona 5, Harry Mitchell (first elected in 2006) lost to David Schweikert
Colorado 3, John Salazar (first elected in 2004) lost to Scott Tipton
Colorado 4, Betsy Markey (first elected in 2008) lost to Cory Gardner
Florida 2, Allen Boyd (first elected in 1996) lost to Steve Southerland
Florida 8, Alan Grayson (first elected in 2008) lost to Daniel Webster
Florida 22, Ron Klein (first elected in 2006) lost to Allen West
Florida 24, Suzanne Kosmas (first elected in 2008) lost to Sandy Adams
Georgia 8, Jim Marshall (first elected in 2002) lost to Austin Scott
Idaho 1, Walt Minnick (first elected in 2008) lost to Raúl Labrador
Illinois 8, Melissa Bean (first elected in 2004) lost to Joe Walsh
Illinois 11, Debbie Halvorson (first elected in 2008) lost to Adam Kinzinger
Illinois 14, Bill Foster (first elected in 2008) lost to Randy Hultgren
Illinois 17, Phil Hare (first elected in 2006) lost to Bobby Schilling
Indiana 9, Baron Hill (originally elected in 1998) lost to Todd Young
Maryland 1, Frank Kratovil (first elected in 2008) lost to Andrew P. Harris
Michigan 7, Mark Schauer (first elected in 2008) lost to Tim Walberg
Minnesota 8, Jim Oberstar (first elected in 1974) lost to Chip Cravaack
Mississippi 1, Travis Childers (first elected in 2008) lost to Alan Nunnelee
Mississippi 4, Gene Taylor (first elected in 1989) lost to Steven Palazzo
Missouri 4, Ike Skelton (first elected in 1976) lost to Vicky Hartzler
Nevada 3, Dina Titus (first elected in 2008) lost to Joe Heck
New Hampshire 1, Carol Shea-Porter (first elected in 2006) lost to Frank Guinta
New Jersey 3, John Adler (first elected in 2008) lost to Jon Runyan
New Mexico 2, Harry Teague (first elected in 2008) lost to Steve Pearce
New York 13, Michael McMahon (first elected in 2008) lost to Michael Grimm
New York 19, John Hall (first elected in 2006) lost to Nan Hayworth
New York 20, Scott Murphy (first elected in 2009) lost to Chris Gibson
New York 24, Mike Arcuri (first elected in 2006) lost to Richard L. Hanna
New York 25, Dan Maffei (first elected in 2008) lost to Ann Marie Buerkle
North Carolina 2, Bob Etheridge (first elected in 1996) lost to Renee Ellmers
North Dakota at-large, Earl Pomeroy (first elected in 1992) lost to Rick Berg
Ohio 1, Steve Driehaus (first elected in 2008) lost to Steve Chabot
Ohio 6, Charlie Wilson (first elected in 2006) lost to Bill Johnson
Ohio 15, Mary Jo Kilroy (first elected in 2008) lost to Steve Stivers
Ohio 16, John Boccieri (first elected in 2008) lost to Jim Renacci
Ohio 18, Zack Space (first elected in 2006) lost to Bob Gibbs
Pennsylvania 3, Kathy Dahlkemper (first elected in 2008) lost to Mike Kelly
Pennsylvania 8, Patrick Murphy (first elected in 2006) lost to Mike Fitzpatrick
Pennsylvania 10, Chris Carney (first elected in 2006) lost to Tom Marino
Pennsylvania 11, Paul E. Kanjorski (first elected in 1984) lost to Lou Barletta
South Carolina 5, John Spratt (first elected in 1982) lost to Mick Mulvaney
South Dakota at-large, Stephanie Herseth Sandlin (first elected in 2004) lost to Kristi Noem
Tennessee 4, Lincoln Davis (first elected in 2002) lost to Scott DesJarlais
Texas 17, Chet Edwards (first elected in 1990) lost to Bill Flores
Texas 23, Ciro Rodriguez (originally elected in 1996) lost to Quico Canseco
Texas 27, Solomon P. Ortiz (first elected in 1982) lost to Blake Farenthold
Virginia 2, Glenn Nye (first elected in 2008) lost to Scott Rigell
Virginia 5, Tom Perriello (first elected in 2008) lost to Robert Hurt
Virginia 9, Rick Boucher (first elected in 1982) lost to Morgan Griffith
Wisconsin 8, Steve Kagen (first elected in 2006) lost to Reid Ribble

Republicans
Two Republicans lost re-election.

Hawaii 1, Charles Djou (first elected in 2010) lost to Colleen Hanabusa
Louisiana 2, Joseph Cao (first elected in 2008) lost to Cedric Richmond

Open seats that changed parties
Democratic seats won by Republicans
14 open seats, held by Democrats, were won by Republicans.

Arkansas 1: Won by Rick Crawford
Arkansas 2: Won by Tim Griffin
Indiana 8: Won by Larry Bucshon
Kansas 3: Won by Kevin Yoder
Louisiana 3: Won by Jeff Landry
Michigan 1: Won by Dan Benishek
New Hampshire 2: Won by Charles Bass
New York 29: Won by Tom Reed
Pennsylvania 7: Won by Pat Meehan
Tennessee 6: Won by Diane Black
Tennessee 8: Won by Stephen Fincher
Washington 3: Won by Jaime Herrera Beutler
West Virginia 1: Won by David McKinley
Wisconsin 7: Won by Sean Duffy

Republican seats won by Democrats
One open seat, held by a Republican, was won by a Democrat.

Delaware at-large: Won by John Carney

Closest races
Eighty-four races were decided by 10% or lower.

Election ratings
Special elections
There were six special elections in 2010 to the 111th United States Congress, listed here by date and district.

Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
Non-voting delegates
The House of Representatives includes five Delegates from the District of Columbia and outlying territories elected to two-year terms and one Resident Commissioner of Puerto Rico elected to a four-year term (for which the last election was held in 2008, so the seat was not up for reelection in 2010). These delegates are not allowed to vote on the floor of the House of Representatives.

See also
2010 United States elections
2010 United States gubernatorial elections
2010 United States Senate elections
111th United States Congress
112th United States Congress

Notes

Answer: the 2008 election