The 1956 United States Senate elections were elections for the United States Senate that coincided with the re-election of President Dwight D. Eisenhower. The 32 seats of Class 3 were contested in regular elections, and three special elections were held to fill vacancies. Although Democrats gained two seats in regular elections, the Republicans gained two seats in special elections, leaving the party balance of the chamber unchanged.
The 1952 United States Senate elections was an election for the United States Senate which coincided with the election of Dwight D. Eisenhower to the presidency by a large margin. The 32 Senate seats of Class 1 were contested in regular elections, and three special elections were held to fill vacancies. The Republicans took control of the Senate by managing to make a net gain of two seats. However, Wayne Morse (R-OR) became an independent forcing Republicans to rely on Vice President Richard Nixon's tie-breaking vote, although Republicans maintained a 48–47–1 plurality. Throughout the next Congress, Republicans were able to restore their 49–46–1 majority. This was the third time, as well as second consecutive, in which a sitting Senate leader lost his seat.
The 2000 United States elections were held on November 7, 2000. Republican Governor George W. Bush of Texas defeated Democratic Vice President Al Gore of Tennessee in the presidential election. Republicans retained control of both houses of Congress, giving the party unified control of Congress and the presidency for the first time since the 1954 elections.
The 1996 United States elections were held on November 5. Democratic President Bill Clinton won re-election, while the Republicans maintained their majorities in both houses of the United States Congress.
The 1944 United States elections was held on November 7, 1944, during the final stages of World War II. President Franklin D. Roosevelt was easily re-elected to an unprecedented fourth term, and the Democratic Party retained their majorities in both chambers of Congress.
The 1976 United States elections were held on November 2, and elected the members of the 95th United States Congress. The Democratic Party won the presidential election and retained control of Congress.
The 1984 United States elections was held on November 6, and elected the members of the 99th United States Congress. Republicans won a landslide victory in the presidential election, picked up seats in the House of Representatives, and successfully defended their Senate majority.
The 1988 United States elections were held on November 8 and elected the President of the United States and members of the 101st United States Congress. Republican Vice President George H. W. Bush defeated Democratic Governor of Massachusetts Michael Dukakis. Despite Dukakis' defeat, the Democratic Party built on their majorities in Congress.
The 1972 United States elections were held on November 7, and elected the members of the 93rd United States Congress. The election took place during the later stages of the Vietnam War. The Republican Party won a landslide victory in the presidential election, and picked up seats in the House, but the Democratic Party easily retained control of Congress. This was the first election after the ratification of the 26th Amendment granted the right to vote to those aged 18–20.
The 1968 United States elections were held on November 5, and elected members of the 91st United States Congress. The election took place during the Vietnam War, in the same year as the Tet Offensive, the assassination of Martin Luther King, Jr., the assassination of Robert F. Kennedy, and the protests of 1968. The Republican Party won control of the presidency, and picked up seats in the House and Senate, although the Democratic Party retained control of Congress.
The 1960 United States elections was held on November 8, and elected the members of the 87th United States Congress. Democratic Senator John F. Kennedy narrowly defeated Republican incumbent Vice President Richard Nixon in the presidential election, and although Republicans made gains in both chambers of Congress, the Democratic Party easily maintained control of Congress.
The 1978 United States elections were held on November 7, 1978, to elect the members of the 96th United States Congress. The election occurred in the middle of Democratic President Jimmy Carter's term. Democrats retained control of both houses of Congress.
The 1958 United States elections were held on November 4, 1958, and elected members of the 86th United States Congress. The election took place in the middle of Republican President Dwight D. Eisenhower's second term. Eisenhower's party suffered large losses. They lost 48 seats to the Democratic Party in the House of Representatives, and also lost thirteen seats in the U.S. Senate to the Democrats. This marked the first time that the six-year itch phenomenon occurred during a Republican presidency since Ulysses S. Grant's second term in 1874. Alaska and Hawaii were admitted as states during the 86th Congress.
The 1954 United States elections were held on November 2, 1954. The election took place in the middle of Republican President Dwight D. Eisenhower's first term. In the election, the Republicans lost the Congressional majorities they had won in the previous election, due in most part to the backlash against McCarthyism and the numerous controversies it spawned including the Army hearings and the suicide of Democratic Senator Lester C. Hunt. The Democratic gains were modest, but they were enough for the party to win back control of both chambers of Congress.
The 1952 United States elections were held on November 4, 1952, during the Cold War and the Korean War. General of the Army Dwight D. Eisenhower won the White House in a landslide over Democratic Governor Adlai Stevenson of Illinois. Meanwhile, Republicans narrowly took control of both chambers of Congress, giving Republicans their first trifecta since the Great Depression. This is the last election until 2000 in which the Republicans held both chambers of Congress and the presidency at the same time. For the rest of the century, Republicans would often still win the presidency without full control of Congress.
The 1940 United States elections was held on November 5. The Democratic Party continued to dominate national politics, as it defended its congressional majorities and retained the presidency. It was the last election prior to the attack on Pearl Harbor and America's entry into World War II.
The 1936 United States elections were held on November 3, 1936, during the Great Depression. Democratic President Franklin D. Roosevelt trounced Governor Alf Landon of Kansas in a landslide and the Democrats built on their majorities in both chambers of Congress.
The 1928 United States elections was held on November 6. In the last election before the start of the Great Depression, the Republican Party retained control of the presidency and bolstered their majority in both chambers of Congress.
The 1924 United States elections were held on November 4. The Republican Party retained control of the presidency and both chambers of Congress.
The 1956 United States Senate election in Pennsylvania was held on November 6, 1956. Incumbent Republican U.S. Senator James H. Duff sought re-election to another term, but was defeated by the Democratic nominee, Joseph S. Clark, Jr.
