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 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 1968 United States Senate elections were elections for the United States Senate. Held on November 5, the 34 seats of Class 3 were contested in regular elections. They coincided with the presidential election of the same year. The Republicans picked up five net seats in the Senate. This saw Republicans win a Senate seat in Florida for the first time since Reconstruction.
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 1984 United States Senate election in West Virginia was held on November 6, 1984. Incumbent Democratic U.S. Senator Jennings Randolph chose to retire instead of seeking re-election to a fifth term, and was succeeded by West Virginia Governor Jay Rockefeller, who defeated Republican John Raese in one of the closer races of the year.
The 1948 United States Senate election in Maine was held on September 13, 1948. Incumbent Republican U.S. Senator and Senate Majority Leader Wallace White did not seek a fourth term in office.
The 1932 United States Senate election in North Carolina was held on November 8, 1932. Interim Democratic senator Cameron A. Morrison ran for election to a full term, but was defeated in the Democratic primary by Robert Rice Reynolds. Reynolds defeated Republican Jacob F. Newell in the general election.
The 1936 United States Senate election in Maine was held on September 14, 1936. Incumbent Republican U.S. Senator Wallace White was re-elected to a second term over Governor Louis J. Brann.
The 1940 United States Senate election in Maine was held on September 9, 1940.
The 1946 United States Senate election in Maine was held on September 9, 1946.
The 1942 United States Senate election in Maine was held on September 14, 1942. Incumbent Republican U.S. Senator Wallace White was re-elected to a third term over Fulton J. Redman.
The 1952 United States Senate election in Maine was held on September 8, 1952.
The 1954 United States Senate election in Maine was held on September 13, 1954. Incumbent Republican U.S. Senator Margaret Chase Smith was re-elected to a second term over Democrat Paul Fullam.
The 1964 United States Senate election in Maine was held on November 3, 1964. Incumbent Democrat Edmund Muskie was re-elected to a second term in office over Republican U.S. Representative Clifford McIntire. This was the first senate race for this particular seat in which the election was held in November and not September. This was the first time ever that an incumbent Democratic Senator from Maine was re-elected to a second full term.
The 1966 United States Senate election in Maine was held on November 8, 1966. Incumbent Republican U.S. Senator Margaret Chase Smith was re-elected to a fourth term over Democratic State Senator Elmer H. Violette.
The 1916 United States Senate election in Maine was held on September 11, 1916.
The 1922 United States Senate election in Maine was held on September 11, 1922, to elect a United States senator from Maine. Incumbent Senator Frederick Hale was re-elected to a second term.
The 1928 United States Senate election in Maine was held on September 10, 1928.
The 1924 United States Senate election in Maine was held on September 8, 1924. Incumbent Republican U.S. Senator Bert Fernald overcame a challenge from U.S. Representative Frank E. Guernsey in the Republican primary. In the general election, Fernald was re-elected to a second term in office over Democratic newspaperman Fulton J. Redman.
The 1960 United States Senate election in Maine was held on November 8, 1960. Incumbent Republican U.S. Senator Margaret Chase Smith was re-elected to a third term over Democratic State Senator Lucia Cormier.
