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 County results Church: 50–60% 60–70% 70–80% 80–90% Hansen: 50–60% | |||||||||||||||||
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| Elections in Idaho |
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The 1968 United States Senate election in Idaho took place on Tuesday, November 5. Democratic incumbent Frank Church was re-elected to a third term in office, defeating Republican U.S. Representative George V. Hansen.
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Frank Church (incumbent) | 173,482 | 60.26% |  5.52 | |
| Republican | George V. Hansen | 114,394 | 39.74% |  5.52 | |
| Total votes | 287,876 | 100.00% | |||
| Democratic hold | Swing | ||||
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 1968 United States Senate election in Oregon was held on November 5, 1968. Incumbent Democratic U.S. Senator Wayne Morse was seeking a fifth term, but narrowly lost re-election to 36 year-old Republican State Representative Bob Packwood in a very close race.
The 1968 United States Senate election in Hawaii took place on November 5, 1968. Incumbent Democratic U.S. Senator Daniel Inouye was re-elected to a second term in office, easily defeating Republican nominee Wayne Thiessen.
The 1968 United States Senate election in Pennsylvania was held on November 5, 1968. Incumbent Democratic U.S. Senator Joseph S. Clark Jr. sought re-election to a third term but was defeated by Republican U.S. Representative Richard Schweiker. As of 2023, this election is the last time that an incumbent Senator lost re-election to this seat.
The 1982 United States Senate election in Indiana was held on November 2, 1982. Incumbent Republican United States Senator Richard Lugar faced Democratic United States Representative Floyd Fithian in the general election. Lugar won with a margin of 53% of the vote, compared to Fithian's 46%. This was Lugar's closest election out of his 6 senate elections for the class 1 seat.
The 1968 United States Senate election in Missouri took place on November 5, 1968.
The 1968 United States Senate election in Maryland was held on November 5, 1968. Incumbent Democratic U.S. Senator Daniel Brewster ran for re-election to a second term in office but was defeated by Republican U.S. Representative Charles Mathias. Mathias may have benefited from the campaign of George P. Mahoney, the 1966 Democratic nominee for Governor of Maryland, who ran on the George Wallace American Independent ticket and garnered a significant chunk of the vote.
The 1968 United States Senate election in Kansas took place on November 5, 1968, concurrently with the U.S. presidential election as well as other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections.
The 1968 United States Senate election in Alabama took place on November 5, 1968. Incumbent Democratic U.S. Senator J. Lister Hill retired. He was succeeded by Lieutenant Governor of Alabama James Allen, who won a hotly contested primary over Armistead I. Selden Jr. In the general election, Allen easily defeated Republican Probate Judge Perry O. Hooper Sr. and National Democratic nominee Robert Schwenn.
The 1968 United States Senate election in Alaska took place on November 5, 1968. Incumbent Democratic U.S. Senator Ernest Gruening ran for a second full term in office but finished behind Speaker of the Alaska House of Representatives Mike Gravel in the Democratic primary. Gruening launched a write-in bid for the seat in the general election, but finished third to Gravel and Republican former Anchorage mayor Elmer Rasmuson.
The 1968 United States Senate election in Ohio took place on November 5, 1968. Incumbent Senator Frank Lausche ran for re-election to a third term, but lost the Democratic primary to former U.S. Representative John J. Gilligan. Before losing the primary to the more solidly liberal Gilligan, Lausche had one of the most conservative voting record among Senate Democrats, leaving the Democratic Party very disappointed. In the general election, Gilligan lost to Republican Ohio Attorney General William Saxbe in a close race. Saxbe's victory increased the number of Senate Republicans in the 91st Congress. He would serve 5 years in the Senate before being nominated by President Richard Nixon to be U.S Attorney General, he resigned the seat after being confirmed. Gilligan, who in January 1974 was serving as the Governor of Ohio, named Saxbe's successor.
The 1968 United States Senate election in Colorado took place on November 5, 1968. Incumbent Republican U.S. Senator Peter Dominick was re-elected to a second term in office over Democratic ex-Governor Stephen McNichols. Peter Dominick defeated Stephen McNichols in a landslide despite Richard Nixon, a fellow Republican to Peter Dominick, winning the state narrowly over Hubert Humphrey in the concurrent presidential election.
The 1968 United States Senate election in Connecticut took place on November 5, 1968. Incumbent Democratic U.S. Senator Abraham Ribicoff was re-elected to a second term in office over Republican U.S. Representative Edwin H. May Jr.
The 1968 United States Senate election in Indiana took place on November 5, 1968. Incumbent Democratic U.S. Senator Birch Bayh was re-elected to a second consecutive term in office, defeating Republican State Representative William Ruckelshaus.
The 1968 United States Senate election in Iowa took place on November 5, 1968. Incumbent Republican U.S. Senator Bourke B. Hickenlooper retired. The open seat was won by Democratic Governor Harold E. Hughes, narrowly defeating Republican State Representative David M. Stanley.
The 1968 United States Senate election in New Hampshire took place on November 5, 1968. Incumbent Republican Senator Norris Cotton won re-election to a third full term.
The 1974 United States Senate election in Illinois took place on November 5, 1974. Incumbent Democratic U.S. Senator Adlai Stevenson III, who was first elected in a special election in 1970, was re-elected to a full term in office, defeating Republican George Burditt by a large margin of nearly 800,000 votes. This election was the fifth consecutive time in which a United States Senate election in Illinois took place two years after a previous United States Senate election in Illinois after 1966, 1968, 1970 and 1972.
The 1974 United States Senate election in Iowa took place on November 5, 1974. Incumbent Democratic U.S. Senator Harold E. Hughes retired. The open seat was won by U.S. Representative John C. Culver, defeating Republican State Representative David M. Stanley. As of 2023, this was the most recent election in which a Democrat, or anyone other than Chuck Grassley, has won the Class 3 Senate seat in Iowa.
The 1968 United States Senate election in Kentucky took place on November 5, 1968. Incumbent Republican U.S. Senator Thruston Morton retired from office. Jefferson County Judge Marlow Cook won the open seat.
