The 1986 United States Senate elections was an election for the United States Senate in the middle of Ronald Reagan's second presidential term. 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 in which the incumbent party suffered net losses while still flipping a Senate seat.
The 1980 United States Senate elections coincided with Ronald Reagan's victory in the presidential election. 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 1974 United States Senate elections were held in the wake of the Watergate scandal, Richard M. Nixon's resignation from the presidency, and Gerald Ford's subsequent pardon of Nixon. Economic issues, specifically inflation and stagnation, were also a factor that contributed to Republican losses. As an immediate result of the November 1974 elections, Democrats made a net gain of three seats from the Republicans, as they defeated Republican incumbents in Colorado and Kentucky and picked up open seats in Florida and Vermont, while Republicans won the open seat in Nevada. Following the elections, at the beginning of the 94th U.S. Congress, the Democratic caucus controlled 61 seats, and the Republican caucus controlled 38 seats.
The 1970 United States Senate elections was an election for the United States Senate, taking place 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 which coincided with the presidential election of the same year. Although Richard Nixon won the presidential election narrowly, the Republicans picked up five net seats in the Senate. Republicans would gain another seat after the election when Alaska Republican Ted Stevens was appointed to replace Democrat Bob Bartlett.
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.
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 Republicans took control of the senate by managing to make a net gain of two seats, which was reduced to one when Wayne Morse (R-OR) became an independent. The Republicans still held a majority after Morse's switch. This election was the second time in history that the party in power lost their majority and the Senate Majority Leader lost his own re-election bid. This was the last time the Senate changed hands in a presidential election year until 1980 and the last time the Republicans won control of the Senate until 1980.
George Perry Mahoney was an Irish American Catholic building contractor and Democratic Party politician from the State of Maryland. A perennial candidate, Mahoney is perhaps most famous as the Democratic nominee for Governor of Maryland in 1966. In his campaign he used the slogan "Your home is your castle; protect it."
The 1976 United States Senate election in New York was held on November 2, 1976. Incumbent Republican U.S. Senator James L. Buckley ran for re-election to a second term, but was defeated by Democratic diplomat Pat Moynihan.
The 1928 United States Senate elections in Arizona took place on November 6, 1928. Incumbent Democratic U.S. Senator Henry F. Ashurst ran for reelection to a fourth term, defeating Republican nominee former U.S. Senator Ralph H. Cameron in the general election. Cameron was defeated in the previous election year, in 1926, by then-U.S. Congressman Carl T. Hayden, leading Cameron to decide to challenge Ashurst in order to return to the United States Senate.
The 1920 United States Senate elections in Arizona took place on November 2, 1920. Incumbent Democratic U.S. Senator Marcus A. Smith ran for reelection to a third term, but was defeated by former Delegate to the U.S. House of Representatives from the Arizona Territory Ralph H. Cameron in the general election. Cameron would become the first Republican elected to the office of U.S. Senator from Arizona since the state joined the union in 1912. The same year, Republican Governor Thomas Edward Campbell was reelected to a second term.
The 1956 United States Senate election in Maryland was held on November 6, 1956. Incumbent Republican U.S. Senator John Marshall Butler was re-elected to a second term in office, defeating Democratic businessman George P. Mahoney.
The 1970 United States Senate election in Maryland took place on November 3, 1970. Incumbent Democratic U.S. Senator Joseph Tydings ran for re-election to a second term, but was narrowly defeated by Republican U.S. Representative J. Glenn Beall Jr.
The 1950 United States Senate election in Maryland was held on November 7, 1950. Incumbent Democratic U.S. Senator Millard Tydings ran for a fifth term in office, but was defeated by Republican John Marshall Butler.
The 1916 United States Senate election in Maryland was held on November 7, 1916.
The 1926 United States Senate election in Maryland was held on November 2, 1926. Incumbent Republican U.S. Senator Ovington Weller ran for re-election to a second term in office, but was beaten badly by Democratic U.S. Representative Millard Tydings of Havre de Grace.
The 1934 United States Senate election in Maryland was held on November 5, 1934.
The 1944 United States Senate election in Maryland was held on November 7, 1944. Incumbent Democratic U.S. Senator Millard Tydings was re-elected to a fourth term in office over Republican Blanchard Randall Jr.
The 1962 United States Senate election in Maryland was held on November 6, 1962. Incumbent Republican U.S. Senator John Marshall Butler did not run for re-election to a third term in office. Democratic U.S. Representative Daniel Brewster won the re-election to succeed him easily over Republican U.S. Representative Edward Tylor Miller.
The 1980 United States Senate election in Maryland took place on November 4, 1980.
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