Washington U.S. Senate election history

Every Washington U.S. Senate election from 1976 to 2024: winners, parties, margins and the seats that changed hands.

Current senators

Washington Senate races: Republican minus Democratic share, in points. Bars above the line lean Republican, below lean Democratic.

Year	Seat	Winner	Party	Runner-up	Margin	Votes
2024	Class I	Maria Cantwell	Democratic	Raul Garcia	18.5	3,812,391
2022	Class III	Patty Murray	Democratic	Tiffany Smiley	14.5	3,047,900
2018	Class I	Maria Cantwell	Democratic	Susan Hutchison	16.9	3,086,168
2016	Class III	Patty Murray	Democratic	Chris Vance	18.0	3,243,317
2012	Class I	Maria Cantwell	Democratic	Michael Baumgartner	20.9	3,069,417
2010	Class III	Patty Murray	Democratic	Dino Rossi	4.7	2,511,094
2006	Class I	Maria Cantwell	Democratic	Mike McGavick	16.9	2,083,734
2004	Class III	Patty Murray	Democratic	George R. Nethercutt	12.2	2,818,651
2000 flip	Class I	Maria Cantwell	Democratic	Slade Gorton	0.1	2,461,379
1998	Class III	Patty Murray	Democratic	Linda Smith	16.8	1,888,561
1994	Class I	Slade Gorton	Republican	Ron Sims	11.5	1,700,173
1992	Class III	Patty Murray	Democratic	Rod Chandler	8.0	2,218,802
1988	Class I	Slade Gorton	Republican	Michael Edward Lowry	2.2	1,848,542
1986 flip	Class III	Brock Adams	Democratic	Slade Gorton	2.0	1,337,367
1982	Class I	Henry M. Jackson	Democratic	Doug Jewett	44.7	1,368,476
1980 flip	Class III	Slade Gorton	Republican	Warren G. Magnuson	8.4	1,728,369
1976	Class I	Henry M. Jackson	Democratic	George M. Brown	47.6	1,491,111

Maria Cantwell won in 2024 by 18.5 points.

Maria Cantwell (Democrat, term ends 2031) and Patty Murray (Democrat, term ends 2029).

In 2024, when Maria Cantwell won.

In 1994, when Slade Gorton won.

Results: FiveThirtyEight (from 1976 for Senate, 1996 for governor). Current members: congress-legislators.