1968 United States Senate election in Washington

The 1968 United States Senate election in Washington was held on November 5, 1968. Incumbent Democratic U.S. Senator Warren Magnuson won a fifth term in office, defeating Republican State Senator Jack Metcalf.

Blanket primary
The blanket primary was held on September 17, 1968.

Democratic

 * Arthur C. DeWitt, unsuccessful candidate for Democratic nomination for U.S. Senate in 1964
 * Warren G. Magnuson, incumbent United States Senator

Republican

 * Harvey L. Cole
 * Roy R. Fait
 * Jack Metcalf, State Senator
 * Ralph O. Westlake

Candidates

 * Warren Magnuson, Democratic, incumbent U.S. Senator
 * Jack Metcalf, Republican, State Senator
 * Irwin R. Hogenauer, New Party, peace activist
 * Debbie Leonard, Socialist Workers