2018 United States Senate election in Washington

2018 United States Senate election in Washington
	Cantwell: 50–60% 60–70% 70–80% 80–90% >90% ; Hutchison: 50–60% 60–70% 70–80% 80–90% >90% ; Tie: 50% No votes
U.S. senator before election; Maria Cantwell; Democratic	Elected U.S. Senator ; Maria Cantwell; Democratic

The 2018 United States Senate election in Washington took place on November 6, 2018, to elect a member of the United States Senate to represent the State of Washington. Incumbent Democrat Maria Cantwell won election to a fourth term over television news journalist Susan Hutchison, a Republican.