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United States · Election results history · 2010 Senate · Washington
Election 2010 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

2010 US Senate election in Washington

Patty Murray (Democrat) beat Dino Rossi (Republican) in Washington in 2010, 52.4% to 47.6%, a margin of 4.7 points and 118,766 votes.

The Democratic hold continued from 2004, when Patty Murray also won.

Republicans led in 30 of the 39 counties and Democrats in 9. The largest, King, cast 753,558 votes and went to the Democrat by 29.8 points. The closest was Island, where 186 votes separated the two parties.

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Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

Senate

CandidatePartyVotesShare
Patty Murray won Democratic 1,314,930 52.4%
Dino Rossi Republican 1,196,164 47.6%
Total2,511,094

Every county

CountyDemocratRepublicanOthersTotalMargin
King 489,190 64.9% 264,368 35.1% 753,558 D+29.8
Pierce 132,924 49.8% 134,025 50.2% 266,949 R+0.4
Snohomish 137,365 51.9% 127,531 48.1% 264,896 D+3.7
Spokane 78,984 43.7% 101,628 56.3% 180,612 R+12.5
Clark 67,052 45.8% 79,499 54.2% 146,551 R+8.5
Thurston 58,950 56.2% 46,014 43.8% 104,964 D+12.3
Kitsap 52,952 51.2% 50,414 48.8% 103,366 D+2.5
Whatcom 44,783 52.5% 40,539 47.5% 85,322 D+5.0
Benton 22,305 35.7% 40,230 64.3% 62,535 R+28.7
Yakima 22,718 36.8% 39,044 63.2% 61,762 R+26.4
Skagit 23,223 48.6% 24,609 51.4% 47,832 R+2.9
Cowlitz 17,331 47.1% 19,443 52.9% 36,774 R+5.7
Island 17,794 49.7% 17,980 50.3% 35,774 R+0.5
Clallam 15,639 47.0% 17,602 53.0% 33,241 R+5.9
Lewis 10,352 33.7% 20,354 66.3% 30,706 R+32.6
Chelan 10,082 36.8% 17,349 63.2% 27,431 R+26.5
Grays Harbor 13,086 51.7% 12,209 48.3% 25,295 D+3.5
Mason 12,061 49.0% 12,568 51.0% 24,629 R+2.1
Grant 6,884 29.0% 16,880 71.0% 23,764 R+42.1
Walla Walla 8,180 38.8% 12,882 61.2% 21,062 R+22.3
Stevens 6,379 32.8% 13,076 67.2% 19,455 R+34.4
Jefferson 10,917 63.0% 6,413 37.0% 17,330 D+26.0
Franklin 5,912 34.5% 11,209 65.5% 17,121 R+30.9
Kittitas 5,838 38.6% 9,276 61.4% 15,114 R+22.7
Okanogan 5,766 39.4% 8,881 60.6% 14,647 R+21.3
Whitman 5,776 43.0% 7,644 57.0% 13,420 R+13.9
Douglas 4,287 32.7% 8,838 67.3% 13,125 R+34.7
Pacific 5,156 53.1% 4,552 46.9% 9,708 D+6.2
San Juan 5,994 65.2% 3,194 34.8% 9,188 D+30.5
Klickitat 3,717 42.9% 4,950 57.1% 8,667 R+14.2
Asotin 3,292 39.2% 5,105 60.8% 8,397 R+21.6
Pend Oreille 2,165 37.6% 3,599 62.4% 5,764 R+24.9
Lincoln 1,666 31.2% 3,668 68.8% 5,334 R+37.5
Skamania 2,118 46.7% 2,415 53.3% 4,533 R+6.6
Adams 1,028 27.3% 2,743 72.7% 3,771 R+45.5
Ferry 1,144 36.0% 2,033 64.0% 3,177 R+28.0
Columbia 665 31.2% 1,466 68.8% 2,131 R+37.6
Wahkiakum 915 45.1% 1,112 54.9% 2,027 R+9.7
Garfield 340 29.3% 822 70.7% 1,162 R+41.5

Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Washington Senate elections we hold

YearWinnerMargin
2024 Maria Cantwell (D) D+18.5
2022 Patty Murray (D) D+14.6
2018 Maria Cantwell (D) D+16.9
2016 Patty Murray (D) D+18.0
2012 Maria Cantwell (D) D+20.9
2010 Patty Murray (D) D+4.7
2006 Maria Cantwell (D) D+16.9
2004 Patty Murray (D) D+12.2
2000 Maria Cantwell (D) D+0.1
1998 Patty Murray (D) D+16.8
1994 Slade Gorton (R) R+11.5
1992 Patty Murray (D) D+8.0
1988 Slade Gorton (R) R+2.2
1986 Brock Adams (D) D+2.0
1982 Henry M. Jackson (D) D+44.7
1980 Slade Gorton (R) R+8.3
1976 Henry M. Jackson (D) D+47.6
1974 Warren Magnuson (D) D+24.6
1970 Scoop Jackson (D) D+66.4
1968 Warren Magnuson (D) D+29.1
1964 Scoop Jackson (D) D+44.4
1962 Warren Magnuson (D) D+4.8
1958 Scoop Jackson (D) D+35.9
1956 Warren Magnuson (D) D+22.2
1952 Scoop Jackson (D) D+12.7
1950 Warren Magnuson (D) D+7.4
1946 Harry P. Cain (R) R+9.1
1944 Warren Magnuson (D) D+10.7
1940 Monrad C. Wallgren (D) D+8.3
1938 Homer T. Bone (D) D+25.5
1934 Lewis Schwellenbach (D) D+26.9
1932 Homer T. Bone (D) D+27.9
1928 Clarence C. Dill (D) D+7.0
1926 Wesley L. Jones (R) R+4.8
1922 Clarence C. Dill (D) D+1.3
1920 Wesley L. Jones (R) R+38.6
1916 Miles Poindexter (R) R+18.3
1914 Wesley L. Jones (R) R+11.2