1968 United States Senate elections
The 1968 United States Senate elections were elections for the United States Senate which coincided with the presidential election. 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.
Incumbents who retired
Democratic hold
- Alabama: J. Lister Hill was replaced by James Allen.
Democratic gain
- Iowa: Bourke B. Hickenlooper was replaced by Harold Hughes.
Republican holds
- Kansas: Frank Carlson was replaced by Bob Dole.
- Kentucky: Thruston Ballard Morton was replaced by Marlow Cook.
Republican gains
- Arizona: Carl Hayden was replaced by Barry Goldwater, who gave up Arizona's other Senate seat in 1964 to run for president.
- Florida: George Smathers was replaced by Edward Gurney, the first Republican to represent [|Florida] in the U.S. Senate since Reconstruction.
Incumbents who lost their seats
Democratic holds
- Alaska: Ernest Gruening lost renomination to Mike Gravel, who later won the general election.
- Missouri: Edward V. Long lost renomination to Thomas Eagleton, who later won the general election.
Democratic gain
- California: Thomas Kuchel lost renomination to Max Rafferty, who later lost the general election to Alan Cranston.
Republican gains
- Maryland: Daniel Brewster lost re-election to Charles Mathias
- Ohio: Frank Lausche lost renomination to John J. Gilligan, who later lost the general election to William B. Saxbe.
- Oklahoma: Mike Monroney, lost re-election to Henry Bellmon.
- Oregon: Wayne Morse, lost re-election to Bob Packwood.
- Pennsylvania: Joseph S. Clark Jr., lost re-election to Richard Schweiker.
Later change
Republican gain
- Alaska: Bob Bartlett died December 11, 1968, and Ted Stevens was appointed December 24, 1968.
Change in Senate composition
Before the elections
After the general elections
Beginning of the next Congress
| Key: | Race summaryElections leading to the next CongressIn these general elections, the winners were elected for the term beginning January 3, 1969; ordered by state.All of the elections involved the Class 3 seats. AlabamaAlaska[|Arizona]Incumbent Democrat Carl Hayden did not run for re-election to an eighth term, with his longtime staff member Roy Elson running as the Democratic Party nominee to replace him. Elson beat State Treasurer of Arizona Bob Kennedy in the Primary. Elson was defeated by a wide margin, however, by former U.S. senator and Republican Presidential nominee Barry Goldwater. Prior to Goldwater's election, the seat had been held for decades by the Democratic Party under Carl Hayden, and has thus far remained in Republican Party control since. Elson had previously challenged U.S. senator Paul Fannin in 1964, when Goldwater vacated his seat in order to run for President against Lyndon B. Johnson.ArkansasCaliforniaColoradoConnecticutFloridaGeorgiaHawaiiIdahoIllinoisIncumbent Republican and Minority Leader Everett Dirksen won re-election to his fourth term over William G. Clark, the Illinois Attorney General.IndianaIowaKansasKentuckyLouisianaMarylandMissouriNevadaNew HampshireNew YorkIncumbent Republican Jacob K. Javits won against Democratic challenger Paul O'Dwyer and Conservative Party challenger James L. Buckley in a three-way election.While Javits did not face any challengers for the Republican nomination, he did face a minor one when seeking the Liberal Party of New York's nomination. North CarolinaThe general election was fought between the Democratic incumbent Sam Ervin and the Republican nominee Robert Somers. Ervin won re-election to a third full term, with over 60% of the vote.The first round of the Primary Election was held on May 4, 1968. The runoff for the Republican Party candidates took place on June 1. North DakotaThe 1968 U.S. Senate election for the state of North Dakota was held November 5, 1968. The incumbent, Republican Senator Milton Young, sought and received re-election to his fifth term, defeating North Dakota Democratic-NPL Party candidate Herschel Lashkowitz, the mayor of Fargo, North Dakota since 1954.Only Young filed as a Republican, and the endorsed Democratic candidate was Herschel Lashkowitz of Fargo, North Dakota, who was serving as the mayor of the city since 1954. Young and Lashkowitz won the primary elections for their respective parties. One independent candidate, Duane Mutch of Larimore, North Dakota, also filed before the deadline. Mutch was later a state senator for the North Dakota Republican Party in the North Dakota Senate from 1959 to 2006 for District 19. He ran as an independent when he did not receive his party's nomination. OhioOklahomaIncumbent Democratic U.S. senator Mike Monroney was running for re-election to a fourth term, but was defeated by Republican former Governor Henry Bellmon.OregonIncumbent Democrat Wayne Morse was seeking a fifth term, but narrowly lost re-election to 36 year-old Republican State Representative Bob Packwood race.The Democratic primary was held May 28, 1968. Morse defeated former Representative Robert B. Duncan, former U.S. Congressman from Oregon's 4th congressional district, and Phil McAlmond, millionaire and former aide to opponent Robert B. Duncan. PennsylvaniaIncumbent Democrat Joseph Clark sought re-election to another term, but was defeated by Republican nominee Richard Schweiker, member of the U.S. House of Representatives.South CarolinaIncumbent Democrat Fritz Hollings easily defeated Republican state senator Marshall Parker in a rematch of the election two years earlier to win his first full term.Hollings faced no opposition from South Carolina Democrats and avoided a primary election. Marshall Parker, the state senator from Oconee County in the Upstate, was persuaded by South Carolina Republicans to enter the race and he did not face a primary challenge. After a close election loss to Fritz Hollings in 1966, the Republicans felt that Parker might have a chance at defeating Hollings by riding Nixon's coattails in the general election. However, the Republicans did not provide Parker with the financial resources to compete and he subsequently lost by a bigger margin to Hollings than two years prior. | colspan=5 |Democratic hold South DakotaUtahVermontIncumbent Republican George Aiken ran successfully for re-election to another term in the United States Senate; he was unopposed.WashingtonWisconsinIncumbent Democrat Gaylord A. Nelson defeated Republican State Senator Jerris Leonard. |