The 1996 United States Senate elections were held on November 5, with the 33 seats of Class 2 contested in regular elections. Special elections were also held to fill vacancies. They coincided with the presidential election of the same year, in which Democrat Bill Clinton was re-elected president.
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 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 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.
Charles Winfield Waterman was a Colorado attorney and politician. He is most notable for his service as a United States senator from Colorado.
A general election was held in the U.S. state of Rhode Island on November 4, 2014. All of Rhode Island's executive officers went up for election as well as a United States Senate seat and both of Rhode Island's two seats in the United States House of Representatives. Primary elections were held on September 9, 2014.
The 1938 United States Senate election in Wisconsin was held on November 8, 1938. Incumbent Democratic U.S. Senator F. Ryan Duffy ran for a second term in office. In a three way race, Alexander Wiley defeated Duffy and Lieutenant Governor Herman L. Ekern.
The 1942 United States Senate election in Colorado took place on November 3, 1942. Incumbent Democratic Senator Edwin C. Johnson was re-elected to second term over Republican Governor Ralph L. Carr.
The 1918 United States Senate elections in New Jersey were held on November 7, 1918.
The 1924 United States Senate special election in Colorado took place on November 4, 1924, to fill the remainder of the term for which Samuel D. Nicholson was elected in 1920. Nicholson died in office on March 24, 1923, and Democratic Governor William Ellery Sweet appointed Alva B. Adams, a prominent Pueblo attorney, to fill the vacancy. Adams, however, declined to be a candidate in the special election, instead challenging incumbent Republican Senator Lawrence C. Phipps in the regular election the same year.
The 1926 United States Senate election in Colorado took place on November 2, 1926. Incumbent Republican Senator Rice W. Means ran for re-election, but he was defeated in the Republican primary by Charles W. Waterman, a prominent attorney and party leader. In the general election, Waterman faced former Governor William Ellery Sweet, the Democratic nominee. Despite the nationwide Democratic trend, as well as the landslide victory for Democrats in the gubernatorial election, Waterman ended up defeating Sweet by a thin margin. Waterman would not end up serving a full term in the Senate, and died in office on August 27, 1932.
The United States Senate election of 1928 in New Jersey was held on November 6, 1928. Incumbent Democratic Senator Edward I. Edwards ran for re-election to a second term in office, but was defeated by Hamilton Fish Kean in a landslide. This was the third of four straight elections to this seat in which the incumbents were defeated.
The 1930 United States Senate election in Colorado took place on November 4, 1930. Republican Senator Lawrence C. Phipps declined to run for re-election, resulting in an open race to replace him. Edward P. Costigan, one of the founding members of the Progressive Party in Colorado and a former member of the United States Tariff Commission, won the Democratic nomination and faced attorney George H. Shaw, the Republican nominee, in the general election. Aided by the nationwide Democratic landslide, Costigan handily defeated Shaw, becoming the first Democrat elected to the Senate from Colorado since 1914.
The United States Senate election of 1934 in New Jersey was held on November 6, 1934.
The 1954 United States Senate election in North Carolina was held on November 2, 1954. Interim Democratic Senator Alton A. Lennon, who had been appointed to fill the vacant seat left by the death of Willis Smith, ran for re-election. Lennon lost the Democratic primary to former Governor W. Kerr Scott, who easily won the general election over Republican Paul C. West.
The 1972 United States Senate election in Louisiana was held on November 9, 1972.
A general election was held in the U.S. state of Vermont on November 5, 2002. All of Vermont's executive officers were up for election as well as Vermont's at-large seat in the United States House of Representatives.
The 1936 Massachusetts gubernatorial election was held on November 3, 1936.
The 1938 Colorado gubernatorial election was held on November 8, 1938. Republican nominee Ralph Lawrence Carr defeated Democratic incumbent Teller Ammons with 59.50% of the vote.
The 1938 United States Senate elections in South Dakota took place on November 8, 1938. Incumbent Republican Senator Peter Norbeck died in office on December 20, 1936. Herbert E. Hitchcock was appointed by Governor Tom Berry as Norbeck's replacement. Two elections for the same Senate seat were held on the same day; one as a special election to fill the remainder of Norbeck's six-year term, and another to select a Senator to serve the next six-year term.
