1952 United States Senate special election in Kentucky

John Sherman Cooper was an American politician, jurist, and diplomat from the Commonwealth of Kentucky. He served three non-consecutive, partial terms in the United States Senate before being elected to two full terms in 1960 and 1966. He also served as U.S. Ambassador to India from 1955 to 1956 and U.S. Ambassador to East Germany from 1974 to 1976. He was the first Republican to be popularly elected to more than one term as a senator from Kentucky and, in both 1960 and 1966, he set records for the largest victory margin for a Kentucky senatorial candidate from either party.

The 1972 United States Senate elections were held on November 7, with the 33 seats of Class 2 contested in regular elections. They coincided with the landslide re-election of Republican President Richard Nixon. Despite Nixon's landslide victory, Democrats increased their majority by two seats. The Democrats picked up open seats in Kentucky and South Dakota, and defeated four incumbent senators: Gordon Allott of Colorado, J. Caleb Boggs of Delaware, Jack Miller of Iowa, and Margaret Chase Smith of Maine. The Republicans picked up open seats in New Mexico, North Carolina, and Oklahoma, and defeated one incumbent, William B. Spong Jr. of Virginia.

The 1970 United States Senate elections was an election for the United States Senate. It took place on November 3, with the 33 seats of Class 1 contested in regular elections. Special elections were also held to fill vacancies. These races occurred in the middle of Richard Nixon's first term as president. The Democrats lost a net of three seats, while the Republicans and the Conservative Party of New York picked up one net seat each, and former Democrat Harry F. Byrd Jr. was re-elected as an independent.

The 1964 United States Senate elections were held on November 3. The 33 seats of Class 1 were contested in regular elections. Special elections were also held to fill vacancies. They coincided with the election of President Lyndon B. Johnson by an overwhelming majority, to a full term. His Democratic Party picked up a net two seats from the Republicans. As of 2023, this was the last time either party has had a two-thirds majority in the Senate, which would have hypothetically allowed the Senate Democrats to override a veto, propose constitutional amendments, or convict and expel certain officials without any votes from Senate Republicans. In practice, however, internal divisions effectively prevented the Democrats from doing so. The Senate election cycle coincided with Democratic gains in the House in the same year.

The 1960 United States Senate elections coincided with the election of John F. Kennedy as president on November 8, 1960. The 33 seats of Class 2 were contested in regular elections. A special election was also held on June 28, 1960, for a mid-term vacancy in North Dakota where Democrats flipped a seat to expand their majority to 66-34. As Majority Leader Lyndon Johnson was elected Vice President, Mike Mansfield became the new Majority Leader.

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.

Virgil Munday Chapman was an American attorney and Democratic politician who represented Kentucky in the United States House of Representatives and in the United States Senate.

Thomas Rust Underwood was an American politician who served Kentucky in the United States House of Representatives and in the United States Senate.

The 1850–51 United States Senate elections were held on various dates in various states. As these U.S. Senate elections were prior to the ratification of the Seventeenth Amendment in 1913, senators were chosen by state legislatures. Senators were elected over a wide range of time throughout 1850 and 1851, and a seat may have been filled months late or remained vacant due to legislative deadlock. In these elections, terms were up for the senators in Class 1.

The 1948 United States Senate election in Kentucky took place on November 2, 1948. Incumbent Republican Senator John Sherman Cooper, who won a 1946 special election to fill the vacant seat of Commissioner of Baseball Happy Chandler, ran for a full term in office but was defeated by Democratic U.S. Representative Virgil Chapman.

The 1946 United States Senate special election in Kentucky was held on November 5, 1946, to complete the unexpired term of Senator Happy Chandler, who resigned to become Commissioner of Baseball. Interim Senator William A. Stanfill did not run for the full term. Republican John Sherman Cooper defeated Democratic former U.S. Representative John Y. Brown to complete the term.

The 1952 United States Senate election in Michigan was held on November 4, 1952 alongside a special election to the same seat.

The 1956 United States Senate special election in Kentucky was held on November 6, 1956, to fill the vacant seat left by Alben Barkley. Former Senator John Sherman Cooper was elected to complete the term ending in 1961, defeating Democratic former Governor Lawrence Wetherby.

The 1954 United States Senate election in Kentucky took place on November 2, 1954. Incumbent Republican Senator John Sherman Cooper, who won a 1952 special election to fill the vacant seat of Virgil Chapman, ran for a full term in office but was defeated by Democratic former Senator and Vice President of the United States Alben Barkley.

The 1960 United States Senate election in Kentucky took place on November 6, 1960. Incumbent Republican Senator John Sherman Cooper, who won a 1956 special election to fill the vacant seat of Alben Barkley, was elected to a full term in office, defeating Democratic former Governor and Undersecretary of Labor Keen Johnson.

The 1966 United States Senate election in Kentucky took place on November 8, 1966. Incumbent Republican Senator John Sherman Cooper was elected to a second consecutive term in office, defeating Democrat John Y. Brown Sr. in a rematch of the 1946 special election.

The 1956 United States Senate special election in West Virginia took place on November 6, 1956, to elect a U.S. Senator to complete the unexpired term of Senator Harley M. Kilgore, who died on February 28. 1956. State Tax Commissioner William Laird III was appointed to fill this seat by Governor William C. Marland to fill the vacancy until a special election could be held and assumed office on March 13, 1956.

The 1930 United States Senate election in Kentucky took place on November 4, 1930, alongside a special election to the same seat.