39 of the 100 seats in the United States Senate 51 seats needed for a majority
Majority party
Minority party
Leader
Mike Mansfield
Everett Dirksen
Party
Democratic
Republican
Leader since
January 3, 1961
January 3, 1959
Leader's seat
Montana
Illinois
Seats before
64
36
Seats after
68
32
Seat change
4
4
Popular vote
21,387,598[1]
20,897,719[1]
Percentage
50.3%
49.1%
Seats up
21
18
Races won
25
14
Results of the elections: Democratic gain Democratic hold Republican gain Republican hold No electionRectangular inset (Id., Kan. & N. H.): both seats up for election
Majority Leader before election
Mike Mansfield
Democratic
Elected Majority Leader
Mike Mansfield
Democratic
The 1962 United States Senate elections was an election for the United States Senate. Held on November 6, the 34 seats of Class 3 were contested in regular elections. Special elections were also held to fill vacancies. They occurred in the middle of President John F. Kennedy's term. His Democratic Party made a net gain of four seats from the Republicans, increasing their control of the Senate to 68–32. However, this was reduced to 67–33 between the election and the next Congress, as on November 18, 1962, Democrat Dennis Chávez, who was not up for election that year, died. He was replaced on November 30, 1962, by Republican appointee Edwin L. Mechem. Additionally, Democrat Strom Thurmond became a Republican in 1964, further reducing Democrats to 66–34. This was the first time since 1932 that Democrats gained seats in this class of Senators.
This was the first time since 1914 that the president's party gained seats in the Senate and lost seats in the House, this would occur again in 1970, 2018, and 2022. This was the last time until 2022 that the Democrats would win full terms in Arizona's and Pennsylvania's Class 3 Senate seats.
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