The 1978 United States Senate elections were held on November 7, in the middle of Democratic President Jimmy Carter's term. The 33 seats of Class 2 were contested in regular elections. Special elections were also held to fill vacancies.
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 allowed the Senate Democrats to override a veto, propose constitutional amendments, or convict and expel certain officials without any votes from Senate Republicans. However, internal divisions would have prevented the Democrats from having done so. The Senate election cycle coincided with Democratic gains in the House in the same year.
The 1958 United States Senate elections were elections for the United States Senate which occurred in the middle of President Dwight D. Eisenhower's second term. Thirty-two seats of Class 1 were contested in regular elections, the new state of Alaska held its first Senate elections for its Class 2 and 3 seats, and two special elections were held to fill vacancies.
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. Wayne Morse would caucus with the Republicans at the start of Congress’ second session on January 6, 1954 to allow the GOP to remain in control of the Senate. This was the third time, as well as second consecutive, in which a sitting Senate leader lost his seat.
The 1950 United States Senate elections occurred in the middle of Harry S. Truman's second term as president. The 32 seats of Class 3 were contested in regular elections, and four special elections were held to fill vacancies. As with most 20th-century second-term midterms, the party not holding the presidency made significant gains. The Republican opposition made a net gain of five seats, taking advantage of the Democratic administration's declining popularity during the Cold War and the aftermath of the Recession of 1949. The Democrats held a narrow 49-to-47-seat majority after the election. This was the first time since 1932 that the Senate majority leader lost his seat, and the only instance of the majority leader losing his seat while his party retained the majority.
The 1946 United States Senate elections were held November 5, 1946, in the middle of Democratic President Harry S. Truman's first term after Roosevelt's passing. The 32 seats of Class 1 were contested in regular elections, and four special elections were held to fill vacancies. The Republicans took control of the Senate by picking up twelve seats, mostly from the Democrats. This was the first time since 1932 that the Republicans had held the Senate, recovering from a low of 16 seats following the 1936 Senate elections.
The 1938 United States Senate elections occurred in the middle of Franklin D. Roosevelt's second term. The 32 seats of Class 3 were contested in regular elections, and special elections were held to fill vacancies. The Republicans gained eight seats from the Democrats, though this occurred after multiple Democratic gains since the 1932 election, leading to the Democrats retaining a commanding lead over the Republicans with more than two-thirds of the legislative chamber.
The 1958 New York state election was held on November 4, 1958, to elect the governor, the lieutenant governor, the state comptroller, the attorney general, a judge of the New York Court of Appeals and a U.S. Senator, as well as all members of the New York State Assembly and the New York State Senate.
The 1974 New York state election was held on November 5, 1974, to elect the governor, the lieutenant governor, the state comptroller, the attorney general, two judges of the New York Court of Appeals and a U.S. Senator, as well as all members of the New York State Assembly and the New York State Senate.
The 1966 New York state election was held on November 8, 1966, to elect the governor, the lieutenant governor, the state comptroller, the attorney general and the Chief Judge of the New York Court of Appeals, as well as all members of the New York State Assembly and the New York State Senate. Besides, 15 delegates-at-large to the New York State Constitutional Convention of 1967 were elected on the state ticket, and three delegates each in the 57 senatorial districts.
The 1938 New York state election was held on November 8, 1938, to elect the governor, the lieutenant governor, the state comptroller, the attorney general, two U.S. Senators and two U.S. Representatives-at-large, as well as all members of the New York State Assembly and the New York State Senate. The 1938 election was the first election where the Governor of New York was elected to a four-year term, rather than a two-year term.
The 1928 New York state elections were held on November 6, 1928, to elect the governor, the lieutenant governor, the state comptroller, the attorney general, a U.S. Senator and a judge of the New York Court of Appeals, as well as all members of the New York State Assembly and the New York State Senate.
The 1932 New York state election was held on November 8, 1932, to elect the governor, the lieutenant governor, the state comptroller, the attorney general, the chief judge, a U.S. Senator and two U.S. Representatives-at-large, as well as all members of the New York State Assembly and the New York State Senate.
The 1944 New York state election was held on November 7, 1944, to elect a judge of the New York Court of Appeals and a U.S. senator, as well as all members of the New York State Assembly and the New York State Senate.
The 1952 United States Senate election in New York was held on November 4. Incumbent Republican Senator Irving M. Ives was re-elected to a second term in office over Democrat John Cashmore with a then-record margin of victory.
The 1964 United States Senate election in New York was held on November 3, 1964. Incumbent Republican U.S. Senator Kenneth Keating ran for re-election to a second term, but was defeated by Robert F. Kennedy.
The 1932 United States Senate election in Connecticut was held on November 8, 1932. Incumbent Senator Hiram Bingham III ran for a second full term in office but was defeated by Democratic U.S. Representative Augustine Lonergan. This was the first time since 1879 that Democrats won this Senate seat, and the first since 1881 that they won either seat.
The United States Senate election of 1944 in New York was held on November 8, 1944. Incumbent Democratic Senator Robert F. Wagner was re-elected to a fourth term over Republican Thomas J. Curran. Wagner would not complete the term, resigning in June 1949 due to ill health.
