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United States · Election results history · 2010 House · 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 House elections in Washington

Washington elected 9 members of the House in 2010: Democrats won 5 seats and Republicans 4.

The closest was the 2nd district, decided by 2.1 points: Rick Larsen (Democrat) beat John Koster (Republican), 51.1% to 48.9%, a margin of 2.1 points and 6,519 votes.

In the House vote by county, Republicans led in 27 of the 39 counties and Democrats in 12. The largest, King, cast 733,496 votes and went to the Democrat by 37.5 points. The closest was Island, where 9 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.

Every district

DistrictDemocratVotesRepublicanVotesOthersMargin
1 Jay Inslee172,642 (57.7%) James Watkins126,737 (42.3%) D+15.3
2 Rick Larsen155,241 (51.1%) John Koster148,722 (48.9%) D+2.1
3 Denny Heck135,654 (47.0%) Jaime Herrera152,799 (53.0%) R+5.9
4 Jay Clough74,973 (32.4%) Doc Hastings156,726 (67.6%) R+35.3
5 Daryl Romeyn101,146 (36.3%) Cathy McMorris177,235 (63.7%) R+27.3
6 Norman D. Dicks151,873 (58.0%) Doug Cloud109,800 (42.0%) D+16.1
7 Jim McDermott232,649 (83.0%) none 47,741 D+83.0
8 Suzan Delbene148,581 (47.9%) David G. Reichert161,296 (52.1%) R+4.1
9 Adam Smith123,743 (54.9%) Richard (Dick) Muri101,851 (45.1%) D+9.7

The House vote in every county

CountyDemocratRepublicanOthersTotalMargin
King 480,500 65.5% 205,255 28.0% 47,741 733,496 D+37.5
Snohomish 138,467 52.6% 124,851 47.4% 263,318 D+5.2
Pierce 136,355 52.3% 124,423 47.7% 260,778 D+4.6
Spokane 71,146 39.2% 110,557 60.8% 181,703 R+21.7
Clark 64,853 44.7% 80,368 55.3% 145,221 R+10.7
Kitsap 59,149 57.1% 44,421 42.9% 103,570 D+14.2
Thurston 58,660 56.9% 44,369 43.1% 103,029 D+13.9
Whatcom 45,476 53.4% 39,641 46.6% 85,117 D+6.9
Benton 19,897 31.9% 42,556 68.1% 62,453 R+36.3
Yakima 21,837 35.4% 39,786 64.6% 61,623 R+29.1
Skagit 23,911 49.9% 24,005 50.1% 47,916 R+0.2
Cowlitz 17,513 48.0% 18,995 52.0% 36,508 R+4.1
Island 17,870 50.0% 17,861 50.0% 35,731 level
Clallam 15,546 46.7% 17,733 53.3% 33,279 R+6.6
Lewis 10,052 33.1% 20,351 66.9% 30,403 R+33.9
Chelan 8,821 32.3% 18,464 67.7% 27,285 R+35.3
Grays Harbor 13,931 55.4% 11,233 44.6% 25,164 D+10.7
Mason 13,330 54.1% 11,322 45.9% 24,652 D+8.1
Grant 5,736 24.2% 17,928 75.8% 23,664 R+51.5
Walla Walla 5,172 24.9% 15,574 75.1% 20,746 R+50.1
Stevens 6,263 31.8% 13,422 68.2% 19,685 R+36.4
Jefferson 11,156 64.8% 6,062 35.2% 17,218 D+29.6
Franklin 5,280 30.8% 11,888 69.2% 17,168 R+38.5
Kittitas 5,490 36.8% 9,418 63.2% 14,908 R+26.3
Okanogan 4,785 32.7% 9,865 67.3% 14,650 R+34.7
Whitman 5,012 37.4% 8,382 62.6% 13,394 R+25.2
Douglas 3,741 28.6% 9,324 71.4% 13,065 R+42.7
Pacific 5,169 54.3% 4,359 45.7% 9,528 D+8.5
San Juan 6,055 66.1% 3,108 33.9% 9,163 D+32.2
Klickitat 3,244 37.8% 5,341 62.2% 8,585 R+24.4
Asotin 2,771 32.8% 5,665 67.2% 8,436 R+34.3
Pend Oreille 2,239 38.5% 3,575 61.5% 5,814 R+23.0
Lincoln 1,605 29.6% 3,811 70.4% 5,416 R+40.7
Skamania 1,963 44.1% 2,487 55.9% 4,450 R+11.8
Adams 878 23.1% 2,918 76.9% 3,796 R+53.7
Ferry 1,021 31.9% 2,183 68.1% 3,204 R+36.3
Columbia 426 20.1% 1,689 79.9% 2,115 R+59.7
Wahkiakum 914 46.0% 1,072 54.0% 1,986 R+8.0
Garfield 268 22.9% 904 77.1% 1,172 R+54.3

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

Washington in every House election we hold

YearSeatsHouse vote
2024 D 8, R 2 D+16.2
2022 D 8, R 2 D+16.2
2020 D 7, R 3 D+17.1
2018 D 7, R 3 D+25.2
2016 D 6, R 4 D+8.3
2014 D 6, R 4 D+7.0
2012 D 6, R 4 D+8.9
2010 D 5, R 4 D+6.5
2008 D 6, R 3 D+18.4
2006 D 6, R 3 D+21.7
2004 D 6, R 3 D+18.8
2002 D 6, R 3 D+7.4
2000 D 6, R 3 D+10.4
1998 D 5, R 4 D+8.7
1996 D 3, R 6 D+5.0
1994 D 2, R 7 R+1.6
1992 D 8, R 1 D+14.6
1990 D 5, R 3 D+7.6