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United States · Election results history · 2010 House · Pennsylvania
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 Pennsylvania

Pennsylvania elected 19 members of the House in 2010: Democrats won 7 seats and Republicans 12.

The closest was the 12th district, decided by 1.6 points: Mark S. Critz (Democrat) beat Tim Burns (Republican), 50.8% to 49.2%, a margin of 1.6 points and 2,886 votes.

In the House vote by county, Republicans led in 54 of the 67 counties and Democrats in 13. The largest, Allegheny, cast 424,578 votes and went to the Democrat by 8.2 points. The closest was Fayette, where 35 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 Robert A. Brady149,944 (100.0%) none D+100.0
2 Chaka Fattah182,800 (89.3%) Rick Hellberg21,907 (10.7%) D+78.6
3 Kathleen A. Dahlkemper88,924 (44.3%) Mike Kelly111,909 (55.7%) R+11.4
4 Jason Altmire120,827 (50.8%) Keith Rothfus116,958 (49.2%) D+1.6
5 Michael Pipe52,375 (28.2%) Glenn Thompson127,427 (68.7%) 5,710 R+40.5
6 Manan Trivedi100,493 (42.9%) Jim Gerlach133,770 (57.1%) R+14.2
7 Bryan Lentz110,314 (44.0%) Patrick Meehan137,825 (54.9%) 2,708 R+11.0
8 Patrick J. Murphy113,547 (46.5%) Michael G. Fitzpatrick130,759 (53.5%) R+7.1
9 Tom Conners52,322 (26.9%) Bill Shuster141,904 (73.1%) R+46.1
10 Christopher P. Carney89,846 (44.8%) Thomas A. Marino110,599 (55.2%) R+10.4
11 Paul E. Kanjorski84,618 (45.3%) Louis J. Barletta102,179 (54.7%) R+9.4
12 Mark S. Critz94,056 (50.8%) Tim Burns91,170 (49.2%) D+1.6
13 Allyson Y. Schwartz118,710 (56.3%) Carson Dee Adcock91,987 (43.7%) D+12.7
14 Michael F. Doyle122,073 (68.8%) Melissa Haluszczak49,997 (28.2%) 5,400 D+40.6
15 John B. Callahan79,766 (39.0%) Charles W. Dent109,534 (53.5%) 15,248 R+14.6
16 Lois Herr70,994 (34.6%) Joseph R. Pitts134,113 (65.4%) R+30.8
17 Tim Holden118,486 (55.5%) Dave Argall95,000 (44.5%) D+11.0
18 Dan Connolly78,558 (32.7%) Tim Murphy161,888 (67.3%) R+34.7
19 Ryan S. Sanders53,549 (23.3%) Rodd Russell Platts165,219 (71.9%) 10,988 R+48.6

The House vote in every county

CountyDemocratRepublicanOthersTotalMargin
Allegheny 227,021 53.5% 192,157 45.3% 5,400 424,578 D+8.2
Philadelphia 354,890 87.4% 51,116 12.6% 406,006 D+74.8
Montgomery 148,736 51.9% 136,985 47.8% 1,047 286,768 D+4.1
Bucks 104,800 45.8% 123,826 54.2% 228,626 R+8.3
Delaware 99,117 49.7% 98,610 49.4% 1,807 199,534 D+0.3
Chester 68,007 39.2% 104,906 60.5% 381 173,294 R+21.3
Lancaster 46,324 30.9% 103,418 69.1% 149,742 R+38.1
York 29,985 22.9% 94,165 72.0% 6,620 130,770 R+49.1
Westmoreland 44,490 35.9% 79,272 64.1% 123,762 R+28.1
Berks 48,744 43.3% 63,639 56.6% 80 112,463 R+13.2
Lehigh 38,272 39.7% 51,993 53.9% 6,156 96,421 R+14.2
Luzerne 42,411 45.3% 51,241 54.7% 93,652 R+9.4
Dauphin 50,629 57.9% 36,776 42.1% 87,405 D+15.8
Erie 48,428 56.6% 37,182 43.4% 85,610 D+13.1
Northampton 33,912 39.8% 42,818 50.2% 8,485 85,215 R+10.5
Cumberland 20,108 24.9% 57,735 71.5% 2,870 80,713 R+46.6
Washington 27,551 39.7% 41,875 60.3% 69,426 R+20.6
Lackawanna 41,059 59.3% 28,228 40.7% 69,287 D+18.5
Butler 21,558 33.1% 43,616 66.9% 65,174 R+33.8
Beaver 33,066 57.5% 24,459 42.5% 57,525 D+15.0
Cambria 25,570 53.8% 21,950 46.2% 47,520 D+7.6
Schuylkill 29,767 65.4% 15,756 34.6% 45,523 D+30.8
Centre 17,051 38.1% 26,351 58.9% 1,318 44,720 R+20.8
Franklin 10,785 24.7% 32,799 75.3% 43,584 R+50.5
Lebanon 18,844 47.5% 20,852 52.5% 39,696 R+5.1
Monroe 18,144 46.4% 20,954 53.6% 39,098 R+7.2
Mercer 15,981 44.1% 20,230 55.9% 36,211 R+11.7
Blair 10,121 28.5% 25,360 71.5% 35,481 R+42.9
Lycoming 10,661 31.3% 22,994 67.5% 420 34,075 R+36.2
Fayette 16,839 50.1% 16,804 49.9% 33,643 D+0.1
Adams 6,817 21.8% 22,900 73.4% 1,498 31,215 R+51.5
Lawrence 15,269 55.0% 12,518 45.0% 27,787 D+9.9
Crawford 9,754 36.3% 17,075 63.6% 36 26,865 R+27.3
Somerset 8,006 31.1% 17,724 68.9% 25,730 R+37.8
Northumberland 11,332 44.3% 14,269 55.7% 25,601 R+11.5
Indiana 8,881 35.3% 16,281 64.7% 25,162 R+29.4
Clearfield 7,266 29.8% 16,561 67.9% 579 24,406 R+38.1
Armstrong 7,963 35.5% 14,488 64.5% 22,451 R+29.1
Carbon 7,467 39.0% 11,656 61.0% 19,123 R+21.9
Columbia 5,604 30.6% 12,697 69.4% 18,301 R+38.8
Bradford 6,528 38.1% 10,591 61.9% 17,119 R+23.7
Bedford 3,488 21.4% 12,840 78.6% 16,328 R+57.3
Venango 4,014 25.4% 11,087 70.3% 678 15,779 R+44.8
Wayne 6,256 39.8% 9,475 60.2% 15,731 R+20.5
Pike 5,958 39.2% 9,237 60.8% 15,195 R+21.6
Perry 4,651 32.1% 9,856 67.9% 14,507 R+35.9
Susquehanna 6,037 43.1% 7,984 56.9% 14,021 R+13.9
Jefferson 2,948 22.0% 10,007 74.8% 427 13,382 R+52.7
Huntingdon 4,076 30.7% 9,185 69.3% 13,261 R+38.5
Clarion 2,916 23.7% 8,764 71.3% 606 12,286 R+47.6
Mifflin 2,470 20.4% 9,485 78.3% 156 12,111 R+57.9
Warren 4,336 35.9% 7,621 63.1% 119 12,076 R+27.2
Tioga 2,635 22.1% 8,960 75.2% 325 11,920 R+53.1
Union 4,663 39.9% 7,028 60.1% 11,691 R+20.2
Snyder 3,791 34.0% 7,375 66.0% 11,166 R+32.1
Greene 5,682 51.9% 5,274 48.1% 10,956 D+3.7
Elk 3,275 32.0% 6,631 64.8% 326 10,232 R+32.8
McKean 2,408 24.4% 7,223 73.3% 222 9,853 R+48.9
Clinton 2,859 30.9% 6,195 66.9% 212 9,266 R+36.0
Wyoming 3,962 44.6% 4,925 55.4% 8,887 R+10.8
Juniata 1,627 22.2% 5,658 77.3% 38 7,323 R+55.0
Montour 2,450 43.2% 3,216 56.8% 5,666 R+13.5
Potter 1,010 19.0% 4,156 78.4% 137 5,303 R+59.3
Fulton 1,003 22.6% 3,438 77.4% 4,441 R+54.8
Sullivan 962 41.5% 1,358 58.5% 2,320 R+17.1
Forest 580 31.0% 1,226 65.6% 63 1,869 R+34.6
Cameron 387 25.0% 1,114 71.9% 48 1,549 R+46.9

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

Pennsylvania in every House election we hold

YearSeatsHouse vote
2024 D 7, R 10 R+2.1
2022 D 9, R 8 R+5.2
2020 D 9, R 9 R+1.3
2018 D 9, R 9 D+10.3
2016 D 5, R 13 R+8.2
2014 D 5, R 13 R+11.0
2012 D 5, R 13 D+1.5
2010 D 7, R 12 R+3.8
2008 D 12, R 7 D+11.9
2006 D 11, R 8 D+12.4
2004 D 7, R 12 R+1.7
2002 D 7, R 12 R+15.4
2000 D 10, R 11 D+1.1
1998 D 11, R 10 R+3.2
1996 D 11, R 10 D+4.3
1994 D 11, R 10 R+10.1
1992 D 11, R 10 R+4.2
1990 D 11, R 12 R+9.1