The 1986 United States Senate elections were elections for the United States Senate. Held on November 4, in the middle of Ronald Reagan's second presidential term, the 34 seats of Class 3 were contested in regular elections. The Republicans had to defend an unusually large number of freshman Senate incumbents who had been elected on President Ronald Reagan's coattails in 1980. Democrats won a net of eight seats, defeating seven freshman incumbents, picking up two Republican-held open seats, and regaining control of the Senate for the first time since January 1981. This remains the most recent midterm election cycle in which the sitting president's party suffered net losses while still flipping a Senate seat.
The 1980 United States Senate elections were held on November 4, coinciding with Ronald Reagan's victory in the presidential election. The 34 Senate seats of Class 3 were contested in regular elections. Reagan's large margin of victory over incumbent Jimmy Carter gave a huge boost to Republican Senate candidates, allowing them to flip 12 Democratic seats and win control of the chamber for the first time since the end of the 83rd Congress in January 1955.
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 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 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.
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 1954 United States Senate elections was a midterm election in the first term of Dwight D. Eisenhower's presidency. The 32 Senate seats of Class 2 were contested in regular elections, and six special elections were held to fill vacancies. Eisenhower's Republican party lost a net of two seats to the Democratic opposition. This small change was just enough to give Democrats control of the chamber with the support of an Independent who agreed to caucus with them, he later officially joined the party in April 1955.
The 1912–13 United States Senate elections were held on various dates in various states. They were the last U.S. Senate elections before the ratification of the Seventeenth Amendment in 1913, establishing direct elections for all Senate seats. Senators had been primarily chosen by state legislatures. Senators were elected over a wide range of time throughout 1912 and 1913, and a seat may have been filled months late or remained vacant due to legislative deadlock. Some states elected their senators directly even before passage of Seventeenth Amendment. Oregon pioneered direct election and experimented with different measures over several years until it succeeded in 1907. Soon after, Nebraska followed suit and laid the foundation for other states to adopt measures reflecting the people's will. By 1912, as many as 29 states elected senators either as nominees of their party's primary or in conjunction with a general election.
The 1994 United States Senate election in Michigan was held November 8, 1994. Incumbent Democratic Senator Don Riegle decided to retire and not run for re-election. Spencer Abraham won the open seat, becoming the only Republican to win a U.S. Senate race in Michigan since Robert P. Griffin in 1972 and the first to win the state's Class I seat since Charles E. Potter in 1952.
The 1958 United States Senate election in Michigan was held on November 4, 1958.
The 1916 United States Senate election in Michigan was held on November 7, 1916.
The 1922 United States Senate election in Texas was held on November 7, 1922. Incumbent Democratic U.S. Senator Charles Culberson ran for re-election to a fifth term, but lost the Democratic primary. A runoff was held between former Governor Pa Ferguson and Railroads Commissioner Earle Bradford Mayfield.
The 1922 United States Senate election in Minnesota took place on November 7, 1922. Farmer–Labor challenger Henrik Shipstead defeated incumbent Republican U.S. Senator Frank B. Kellogg and Democratic challenger Anna Dickie Olesen.
The 1928 United States Senate election in Michigan was held on November 6, 1928 alongside a special election to the same seat.
The 1936 United States Senate election in Michigan was held on November 3, 1936. Incumbent Republican U.S. Senator James J. Couzens ran for re-election to a third term in office, but was defeated in the Republican primary by Governor Wilber Brucker. Brucker was defeated in the general election by Democratic U.S. Representative Prentiss M. Brown, becoming the first Democrat to win this seat since 1853.
Events from the year 1928 in Michigan.
The 1922 United States Senate election in New York was held on November 7, 1922. Incumbent Republican Senator William Calder ran for re-election to a second term, but was defeated by Democrat Royal Copeland.
The 1914 Michigan gubernatorial election was held on November 3, 1914. Incumbent Democrat Woodbridge N. Ferris defeated Republican candidate Chase S. Osborn with 48.15% of the vote.
