1974 United States Senate election in Washington

1974 United States Senate election in Washington
	County results; Magnuson: 40–50% 50–60% 60–70% 70–80%; Metcalf: 40–50% 50–60%
U.S. senator before election; Warren G. Magnuson; Democratic	Elected U.S. Senator ; Warren G. Magnuson; Democratic

The 1974 United States Senate election in Washington was held on November 5, 1974. Incumbent Democratic U.S. Senator Warren Magnuson won a sixth term in office, defeating Republican state senator Jack Metcalf, in a rematch of the previous election.