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 County results Magnuson: 40–50% 50–60% 60–70% 70–80% Metcalf: 40–50% 50–60% | |||||||||||||||||
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| Elections in Washington |
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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.