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United States · Election results history · 2006 Senate · Pennsylvania
Election 2006 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.

2006 US Senate election in Pennsylvania

Bob Casey, Jr. (Democrat) beat Rick Santorum (Republican) in Pennsylvania in 2006, 58.6% to 41.3%, a margin of 17.4 points and 708,206 votes.

Pennsylvania changed party: in 2000 it went Republican, for Rick Santorum.

Democrats led in 34 of the 67 counties and Republicans in 33. The largest, Allegheny, cast 459,942 votes and went to the Democrat by 29.8 points. The closest was Armstrong, where 50 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
Bob Casey, Jr. won Democratic 2,392,984 58.6%
Rick Santorum Republican 1,684,778 41.3%
All other candidates 3,281 0.1%
Total4,081,043

Every county

CountyDemocratRepublicanOthersTotalMargin
Allegheny 298,096 64.8% 161,144 35.0% 702 459,942 D+29.8
Philadelphia 357,057 84.1% 67,452 15.9% 424,509 D+68.2
Montgomery 181,274 61.9% 111,507 38.1% 54 292,835 D+23.8
Bucks 136,063 58.5% 96,441 41.5% 96 232,600 D+17.0
Delaware 128,052 61.6% 79,534 38.3% 206 207,792 D+23.3
Chester 95,293 55.0% 77,948 45.0% 52 173,293 D+10.0
Lancaster 62,662 41.7% 87,535 58.2% 157 150,354 R+16.5
Westmoreland 69,608 53.4% 60,468 46.4% 172 130,248 D+7.0
York 56,470 44.8% 69,271 55.0% 247 125,988 R+10.2
Berks 63,915 54.7% 52,806 45.2% 20 116,741 D+9.5
Luzerne 57,868 60.6% 37,648 39.4% 42 95,558 D+21.2
Lehigh 53,855 57.7% 39,461 42.3% 27 93,343 D+15.4
Dauphin 46,622 53.3% 40,832 46.7% 9 87,463 D+6.6
Erie 50,857 59.3% 34,757 40.5% 119 85,733 D+18.8
Northampton 48,419 58.3% 34,644 41.7% 15 83,078 D+16.6
Cumberland 36,638 46.2% 42,410 53.5% 276 79,324 R+7.3
Lackawanna 54,289 69.4% 23,874 30.5% 9 78,172 D+38.9
Washington 43,067 59.3% 29,417 40.5% 90 72,574 D+18.8
Beaver 39,998 61.9% 24,450 37.8% 165 64,613 D+24.1
Butler 27,818 44.7% 34,253 55.1% 98 62,169 R+10.4
Cambria 33,196 63.7% 18,928 36.3% 5 52,129 D+27.4
Schuylkill 25,508 54.2% 21,510 45.7% 14 47,032 D+8.5
Centre 24,582 56.7% 18,639 43.0% 123 43,344 D+13.7
Franklin 16,710 38.6% 26,524 61.3% 62 43,296 R+22.7
Lebanon 17,737 44.9% 21,756 55.0% 44 39,537 R+10.2
Blair 17,179 44.4% 21,504 55.5% 45 38,728 R+11.2
Fayette 24,495 64.5% 13,484 35.5% 4 37,983 D+29.0
Mercer 21,640 57.0% 16,274 42.9% 27 37,941 D+14.1
Lycoming 14,155 39.4% 21,734 60.5% 41 35,930 R+21.1
Monroe 19,862 56.1% 15,555 43.9% 35,417 D+12.2
Lawrence 18,436 58.0% 13,368 42.0% 31,804 D+15.9
Adams 13,587 44.9% 16,649 55.0% 8 30,244 R+10.1
Crawford 13,480 48.6% 14,260 51.4% 18 27,758 R+2.8
Somerset 14,054 51.1% 13,391 48.7% 44 27,489 D+2.4
Northumberland 13,140 49.7% 13,304 50.3% 26,444 R+0.6
Indiana 14,091 53.3% 12,342 46.7% 4 26,437 D+6.6
Clearfield 14,186 55.3% 11,480 44.7% 3 25,669 D+10.5
Armstrong 11,549 50.1% 11,499 49.9% 23,048 D+0.2
Bradford 8,277 43.3% 10,804 56.6% 21 19,102 R+13.2
Columbia 9,327 50.9% 8,970 49.0% 14 18,311 D+1.9
Venango 8,502 48.4% 9,042 51.5% 26 17,570 R+3.1
Carbon 9,997 57.3% 7,439 42.6% 25 17,461 D+14.6
Bedford 6,895 41.5% 9,703 58.5% 16,598 R+16.9
Wayne 7,294 46.4% 8,400 53.5% 15 15,709 R+7.0
Susquehanna 7,318 48.4% 7,787 51.5% 14 15,119 R+3.1
Perry 5,719 39.6% 8,729 60.4% 14,448 R+20.8
Jefferson 6,424 45.4% 7,731 54.6% 14,155 R+9.2
Pike 6,718 48.2% 7,208 51.7% 17 13,943 R+3.5
Huntingdon 6,315 46.5% 7,279 53.5% 1 13,595 R+7.1
Warren 6,677 51.2% 6,325 48.5% 30 13,032 D+2.7
Clarion 6,081 47.2% 6,801 52.8% 1 12,883 R+5.6
Greene 8,078 63.5% 4,637 36.4% 13 12,728 D+27.0
Tioga 4,850 38.7% 7,650 61.1% 22 12,522 R+22.4
Mifflin 5,247 42.5% 7,097 57.5% 2 12,346 R+15.0
Union 4,876 42.4% 6,614 57.5% 6 11,496 R+15.1
Elk 7,142 62.9% 4,192 36.9% 13 11,347 D+26.0
Snyder 4,137 36.7% 7,147 63.3% 2 11,286 R+26.7
McKean 5,003 45.7% 5,928 54.2% 5 10,936 R+8.5
Wyoming 4,591 44.8% 5,635 55.0% 20 10,246 R+10.2
Clinton 5,287 54.1% 4,491 45.9% 9,778 D+8.1
Juniata 3,236 41.4% 4,557 58.4% 15 7,808 R+16.9
Montour 2,704 46.5% 3,110 53.4% 6 5,820 R+7.0
Potter 2,024 36.1% 3,573 63.7% 13 5,610 R+27.6
Fulton 1,699 38.9% 2,673 61.1% 4,372 R+22.3
Sullivan 1,181 46.6% 1,351 53.3% 2 2,534 R+6.7
Forest 1,029 52.3% 938 47.7% 1,967 D+4.6
Cameron 848 48.1% 914 51.9% 1,762 R+3.7

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