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United States · Election results history · 1956 Senate · Pennsylvania
Election 1956 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.

1956 US Senate election in Pennsylvania

Joseph S. Clark (Democrat) beat James H. Duff (Republican) in Pennsylvania in 1956, 50.1% to 49.7%, a margin of 0.4 points and 17,970 votes.

Pennsylvania changed party: in 1950 it went Republican, for James H. Duff.

Republicans led in 53 of the 67 counties as they stood then and Democrats in 14. The largest, Philadelphia, cast 883,271 votes and went to the Democrat by 19.3 points. The closest was Fulton, where 22 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
Joseph S. Clark won Democratic 2,268,641 50.1%
James H. Duff Republican 2,250,671 49.7%
All other candidates 10,562 0.2%
Total4,529,874

Every county

CountyDemocratRepublicanOthersTotalMargin
Philadelphia 526,012 59.6% 355,848 40.3% 1,411 883,271 D+19.3
Allegheny 368,167 52.8% 327,026 46.9% 1,873 697,066 D+5.9
Delaware 92,049 41.1% 131,511 58.7% 389 223,949 R+17.6
Montgomery 71,901 37.4% 119,965 62.4% 287 192,153 R+25.0
Luzerne 74,511 48.4% 78,648 51.0% 905 154,064 R+2.7
Westmoreland 84,279 60.8% 54,044 39.0% 367 138,690 D+21.8
Lackawanna 61,227 51.7% 57,084 48.2% 109 118,420 D+3.5
Berks 50,292 51.0% 48,084 48.7% 289 98,665 D+2.2
Bucks 46,444 47.5% 51,259 52.4% 172 97,875 R+4.9
Lancaster 32,024 33.7% 62,809 66.1% 224 95,057 R+32.4
Dauphin 36,216 40.3% 53,280 59.3% 325 89,821 R+19.0
Cambria 50,536 57.5% 36,930 42.0% 398 87,864 D+15.5
Washington 54,358 62.1% 32,890 37.6% 227 87,475 D+24.5
Erie 40,201 46.0% 46,899 53.7% 256 87,356 R+7.7
York 43,200 50.0% 43,051 49.8% 135 86,386 D+0.2
Schuylkill 36,705 44.2% 46,105 55.6% 147 82,957 R+11.3
Lehigh 36,197 46.1% 42,158 53.7% 206 78,561 R+7.6
Northampton 39,600 52.4% 35,608 47.1% 357 75,565 D+5.3
Beaver 43,603 58.6% 30,645 41.2% 153 74,401 D+17.4
Chester 24,800 37.2% 41,876 62.7% 75 66,751 R+25.6
Fayette 41,076 63.1% 23,820 36.6% 173 65,069 D+26.5
Blair 22,381 43.8% 28,540 55.9% 127 51,048 R+12.1
Mercer 22,435 46.8% 25,344 52.9% 137 47,916 R+6.1
Northumberland 22,229 49.8% 22,352 50.0% 91 44,672 R+0.3
Lawrence 23,982 53.8% 20,526 46.0% 91 44,599 D+7.7
Cumberland 17,256 40.5% 25,264 59.3% 109 42,629 R+18.8
Lycoming 18,479 45.8% 21,780 54.0% 86 40,345 R+8.2
Butler 17,468 44.1% 22,003 55.6% 103 39,574 R+11.5
Somerset 15,342 45.7% 18,172 54.1% 66 33,580 R+8.4
Lebanon 14,344 43.8% 18,281 55.9% 92 32,717 R+12.0
Armstrong 15,385 47.4% 16,957 52.2% 141 32,483 R+4.8
Clearfield 15,763 52.4% 14,217 47.2% 109 30,089 D+5.1
Franklin 13,387 44.5% 16,663 55.4% 21 30,071 R+10.9
Indiana 13,407 45.7% 15,904 54.3% 29,311 R+8.5
Crawford 11,079 39.8% 16,715 60.0% 77 27,871 R+20.2
Centre 10,148 44.5% 12,609 55.3% 34 22,791 R+10.8
Venango 7,263 32.3% 15,162 67.5% 30 22,455 R+35.2
Carbon 11,145 49.7% 11,206 50.0% 79 22,430 R+0.3
Columbia 10,960 49.1% 11,321 50.7% 32 22,313 R+1.6
Bradford 6,645 32.0% 14,081 67.8% 42 20,768 R+35.8
McKean 5,959 30.3% 13,613 69.3% 63 19,635 R+39.0
Jefferson 8,331 42.7% 11,169 57.2% 33 19,533 R+14.5
Adams 7,756 42.0% 10,680 57.9% 22 18,458 R+15.8
Bedford 7,309 42.1% 10,030 57.8% 28 17,367 R+15.7
Greene 11,168 65.1% 5,949 34.7% 31 17,148 D+30.4
Warren 5,259 31.9% 11,179 67.9% 31 16,469 R+35.9
Monroe 6,760 44.0% 8,546 55.6% 57 15,363 R+11.6
Susquehanna 5,266 35.1% 9,706 64.7% 26 14,998 R+29.6
Clarion 6,639 44.8% 8,180 55.1% 14 14,833 R+10.4
Elk 6,798 47.7% 7,428 52.1% 31 14,257 R+4.4
Huntingdon 5,817 41.0% 8,341 58.7% 41 14,199 R+17.8
Tioga 3,970 28.4% 10,001 71.5% 18 13,989 R+43.1
Mifflin 6,049 44.6% 7,491 55.2% 20 13,560 R+10.6
Clinton 6,629 49.0% 6,876 50.8% 26 13,531 R+1.8
Wayne 3,934 30.9% 8,791 69.0% 17 12,742 R+38.1
Perry 4,518 41.5% 6,324 58.1% 34 10,876 R+16.6
Snyder 2,748 30.6% 6,213 69.2% 12 8,973 R+38.6
Union 2,599 31.0% 5,754 68.7% 24 8,377 R+37.7
Wyoming 2,633 33.1% 5,306 66.7% 13 7,952 R+33.6
Potter 2,737 37.1% 4,618 62.7% 14 7,369 R+25.5
Juniata 3,327 47.7% 3,641 52.2% 10 6,978 R+4.5
Montour 2,678 44.4% 3,325 55.2% 25 6,028 R+10.7
Pike 1,681 31.5% 3,644 68.4% 6 5,331 R+36.8
Fulton 2,054 49.6% 2,076 50.2% 7 4,137 R+0.5
Cameron 1,237 37.6% 2,050 62.3% 6 3,293 R+24.7
Sullivan 1,474 45.2% 1,787 54.7% 3 3,264 R+9.6
Forest 815 38.2% 1,316 61.6% 5 2,136 R+23.5

Counties as they stood in 1956; some have since been split, merged or renamed. 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