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United States · Election results history · 2012 Senate · Pennsylvania
Election 2012 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.

2012 US Senate election in Pennsylvania

Robert P. Casey, Jr. (Democrat) beat Tom Smith (Republican) in Pennsylvania in 2012, 53.7% to 44.6%, a margin of 9.1 points and 512,232 votes.

The Democratic hold continued from 2006, when Bob Casey, Jr. won.

Republicans led in 50 of the 67 counties and Democrats in 17. The largest, Philadelphia, cast 653,850 votes and went to the Democrat by 73.5 points. The closest was Mercer, where 458 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
Robert P. Casey, Jr. won Democratic 3,021,364 53.7%
Tom Smith Republican 2,509,132 44.6%
All other candidates 96,926 1.7%
Total5,627,422

Every county

CountyDemocratRepublicanOthersTotalMargin
Philadelphia 564,886 86.4% 84,461 12.9% 4,503 653,850 D+73.5
Allegheny 362,459 59.3% 236,546 38.7% 12,106 611,111 D+20.6
Montgomery 235,197 58.4% 163,882 40.7% 3,712 402,791 D+17.7
Bucks 162,258 51.6% 147,595 47.0% 4,303 314,156 D+4.7
Delaware 170,477 61.6% 103,719 37.5% 2,746 276,942 D+24.1
Chester 125,671 50.4% 119,296 47.8% 4,598 249,565 D+2.6
Lancaster 88,778 40.3% 127,135 57.7% 4,387 220,300 R+17.4
York 74,681 39.8% 108,021 57.6% 4,941 187,643 R+17.8
Westmoreland 69,431 41.4% 95,218 56.8% 3,060 167,709 R+15.4
Berks 84,403 50.8% 78,679 47.4% 2,909 165,991 D+3.4
Lehigh 79,527 55.1% 62,071 43.0% 2,712 144,310 D+12.1
Northampton 68,203 54.0% 56,268 44.6% 1,821 126,292 D+9.5
Luzerne 66,951 54.5% 53,168 43.3% 2,738 122,857 D+11.2
Dauphin 65,235 54.1% 53,649 44.5% 1,726 120,610 D+9.6
Erie 65,406 55.9% 48,708 41.6% 2,837 116,951 D+14.3
Cumberland 46,294 42.1% 61,296 55.7% 2,445 110,035 R+13.6
Lackawanna 64,940 66.7% 30,928 31.8% 1,543 97,411 D+34.9
Washington 43,711 46.7% 48,047 51.3% 1,850 93,608 R+4.6
Butler 30,620 34.5% 56,320 63.5% 1,751 88,691 R+29.0
Beaver 39,970 50.1% 38,092 47.8% 1,701 79,763 D+2.4
Centre 34,156 49.9% 32,112 46.9% 2,212 68,480 D+3.0
Franklin 19,726 31.5% 41,697 66.5% 1,286 62,709 R+35.0
Cambria 28,779 47.7% 30,202 50.1% 1,330 60,311 R+2.4
Monroe 33,502 55.8% 25,579 42.6% 918 59,999 D+13.2
Schuylkill 24,639 42.9% 31,625 55.0% 1,204 57,468 R+12.2
Lebanon 21,007 37.5% 33,843 60.5% 1,110 55,960 R+22.9
Blair 17,424 34.7% 31,666 63.1% 1,097 50,187 R+28.4
Mercer 24,314 48.4% 24,772 49.4% 1,101 50,187 R+0.9
Fayette 24,298 50.5% 22,950 47.7% 846 48,094 D+2.8
Lycoming 16,179 35.1% 29,024 62.9% 951 46,154 R+27.8
Adams 15,763 37.3% 25,467 60.3% 1,002 42,232 R+23.0
Lawrence 18,603 48.1% 19,353 50.1% 689 38,645 R+1.9
Indiana 14,908 41.2% 20,452 56.5% 843 36,203 R+15.3
Crawford 13,146 37.3% 21,140 60.0% 927 35,213 R+22.7
Somerset 10,866 32.1% 22,190 65.7% 744 33,800 R+33.5
Northumberland 12,904 39.5% 19,057 58.3% 720 32,681 R+18.8
Clearfield 11,286 35.4% 19,845 62.3% 713 31,844 R+26.9
Armstrong 9,496 32.2% 19,442 65.9% 574 29,512 R+33.7
Columbia 11,336 44.6% 13,509 53.1% 592 25,437 R+8.5
Carbon 11,924 47.2% 12,758 50.5% 589 25,271 R+3.3
Bradford 8,234 35.4% 14,423 62.1% 581 23,238 R+26.6
Pike 10,081 44.2% 12,267 53.8% 450 22,798 R+9.6
Venango 7,816 35.5% 13,608 61.8% 608 22,032 R+26.3
Bedford 5,553 25.7% 15,673 72.7% 347 21,573 R+46.9
Wayne 8,791 40.9% 12,276 57.1% 433 21,500 R+16.2
Perry 6,168 32.3% 12,420 65.1% 504 19,092 R+32.7
Jefferson 4,878 27.0% 12,780 70.7% 428 18,086 R+43.7
Susquehanna 7,082 39.3% 10,555 58.6% 385 18,022 R+19.3
Huntingdon 5,820 33.2% 11,285 64.3% 434 17,539 R+31.2
Warren 6,432 37.7% 10,136 59.4% 483 17,051 R+21.7
Tioga 5,255 31.3% 11,179 66.5% 381 16,815 R+35.2
Mifflin 4,937 30.3% 11,099 68.1% 268 16,304 R+37.8
Clarion 5,105 31.6% 10,451 64.7% 585 16,141 R+33.1
Union 6,112 38.0% 9,592 59.7% 370 16,074 R+21.6
McKean 5,355 35.9% 9,250 62.0% 316 14,921 R+26.1
Snyder 4,651 31.3% 9,851 66.3% 366 14,868 R+35.0
Greene 6,768 47.3% 7,262 50.8% 269 14,299 R+3.5
Elk 5,611 42.6% 7,182 54.5% 386 13,179 R+11.9
Clinton 5,857 44.5% 7,020 53.3% 295 13,172 R+8.8
Wyoming 5,117 43.3% 6,391 54.1% 310 11,818 R+10.8
Juniata 3,010 31.5% 6,337 66.3% 204 9,551 R+34.8
Montour 3,121 40.3% 4,435 57.3% 190 7,746 R+17.0
Potter 1,950 27.3% 5,035 70.4% 169 7,154 R+43.1
Fulton 1,605 26.2% 4,407 71.8% 125 6,137 R+45.7
Sullivan 1,050 35.9% 1,803 61.6% 72 2,925 R+25.7
Forest 884 38.4% 1,356 58.9% 61 2,301 R+20.5
Cameron 767 36.3% 1,277 60.4% 69 2,113 R+24.1

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

Pennsylvania Senate elections we hold

YearWinnerMargin
2024 Dave McCormick (R) R+0.2
2022 John K Fetterman (D) D+4.9
2018 Robert P Casey Jr (D) D+12.9
2016 Patrick J. Toomey (R) R+1.4
2012 Robert P. Casey, Jr. (D) D+9.1
2010 Pat Toomey (R) R+2.0
2006 Bob Casey, Jr. (D) D+17.4
2004 Arlen Specter (R) R+10.6
2000 Rick Santorum (R) R+6.9
1998 Arlen Specter (R) R+26.6
1994 Rick Santorum (R) R+2.5
1992 Arlen Specter (R) R+2.8
1988 John Heinz (R) R+34.0
1986 Arlen Specter (R) R+13.6
1982 John Heinz (R) R+20.1
1980 Arlen Specter (R) R+2.4
1976 H. John Heinz III (R) R+5.6
1974 Richard Schweiker (R) R+7.1
1970 Hugh Scott (R) R+6.0
1968 Richard Schweiker (R) R+6.1
1964 Hugh Scott (R) R+1.5
1962 Joseph S. Clark (D) D+2.4
1958 Hugh Scott (R) R+2.8
1956 Joseph S. Clark (D) D+0.4
1952 Edward Martin (R) R+3.6
1950 James H. Duff (R) R+3.6
1946 Edward Martin (R) R+19.4
1944 Francis Myers (D) D+0.6
1940 Joseph F. Guffey (D) D+4.4
1938 James J. Davis (R) R+10.6
1934 Joseph F. Guffey (D) D+4.3
1932 James J. Davis (R) R+6.2
1928 David A. Reed (R) R+30.4
1926 William S. Vare (R) R+11.5
1922 David A. Reed (R) R+25.5
1920 Boies Penrose (R) R+32.8
1916 Philander Knox (R) R+19.1
1914 Boies Penrose (R) R+22.8