Pennsylvania — 2010 U.S. Senate election
Recent presidential results
Akashicstate2010 Senate electionPennsylvania · U.S. SenateToomeyR+2.0
How it voted
Share of the 2010 vote
| Pat Toomey ✓Republican | 51.0% | 2,028,945 |
|---|---|---|
| Joe SestakDemocrat | 49.0% | 1,948,716 |
2010Senate margin
D+60R+60
67 counties, each filled by 2010 D-vs-R margin. Hover any county for its result.
County-level results (67 counties) — table
| County | Winner | Margin |
|---|---|---|
| ADAMS, PA | Republican | R+38.7 |
| ALLEGHENY, PA | Democratic | D+9.6 |
| ARMSTRONG, PA | Republican | R+30.6 |
| BEAVER, PA | Republican | R+4.9 |
| BEDFORD, PA | Republican | R+49.8 |
| BERKS, PA | Republican | R+11.2 |
| BLAIR, PA | Republican | R+36.9 |
| BRADFORD, PA | Republican | R+40.8 |
| BUCKS, PA | Republican | R+6.2 |
| BUTLER, PA | Republican | R+36.9 |
| CAMBRIA, PA | Republican | R+2.6 |
| CAMERON, PA | Republican | R+28.8 |
| CARBON, PA | Republican | R+9.4 |
| CENTRE, PA | Republican | R+3.4 |
| CHESTER, PA | Republican | R+6.9 |
| CLARION, PA | Republican | R+34.8 |
| CLEARFIELD, PA | Republican | R+20.9 |
| CLINTON, PA | Republican | R+17.4 |
| COLUMBIA, PA | Republican | R+24.3 |
| CRAWFORD, PA | Republican | R+25.2 |
| CUMBERLAND, PA | Republican | R+31.0 |
| DAUPHIN, PA | Republican | R+11.5 |
| DELAWARE, PA | Democratic | D+12.3 |
| ELK, PA | Republican | R+10.2 |
| ERIE, PA | Democratic | D+10.2 |
| FAYETTE, PA | Republican | R+0.4 |
| FOREST, PA | Republican | R+19.8 |
| FRANKLIN, PA | Republican | R+47.6 |
| FULTON, PA | Republican | R+53.6 |
| GREENE, PA | Republican | R+0.2 |
| HUNTINGDON, PA | Republican | R+36.8 |
| INDIANA, PA | Republican | R+20.0 |
| JEFFERSON, PA | Republican | R+41.2 |
| JUNIATA, PA | Republican | R+50.1 |
| LACKAWANNA, PA | Democratic | D+19.7 |
| LANCASTER, PA | Republican | R+36.4 |
| LAWRENCE, PA | Republican | R+11.4 |
| LEBANON, PA | Republican | R+40.4 |
| LEHIGH, PA | Republican | R+5.1 |
| LUZERNE, PA | Democratic | D+1.4 |
| LYCOMING, PA | Republican | R+40.0 |
| MCKEAN, PA | Republican | R+37.3 |
| MERCER, PA | Republican | R+11.3 |
| MIFFLIN, PA | Republican | R+51.1 |
| MONROE, PA | Republican | R+3.5 |
| MONTGOMERY, PA | Democratic | D+8.2 |
| MONTOUR, PA | Republican | R+27.4 |
| NORTHAMPTON, PA | Republican | R+4.6 |
| NORTHUMBERLAND, PA | Republican | R+24.0 |
| PERRY, PA | Republican | R+50.9 |
| PHILADELPHIA, PA | Democratic | D+68.1 |
| PIKE, PA | Republican | R+26.5 |
| POTTER, PA | Republican | R+48.2 |
| SCHUYLKILL, PA | Republican | R+17.8 |
| SNYDER, PA | Republican | R+43.9 |
| SOMERSET, PA | Republican | R+33.9 |
| SULLIVAN, PA | Republican | R+34.9 |
| SUSQUEHANNA, PA | Republican | R+30.6 |
| TIOGA, PA | Republican | R+44.1 |
| UNION, PA | Republican | R+30.5 |
| VENANGO, PA | Republican | R+28.9 |
| WARREN, PA | Republican | R+25.8 |
| WASHINGTON, PA | Republican | R+9.0 |
| WAYNE, PA | Republican | R+31.2 |
| WESTMORELAND, PA | Republican | R+22.2 |
| WYOMING, PA | Republican | R+25.8 |
| YORK, PA | Republican | R+35.5 |
presidential baselinePresident 2008D+10.3Senate 2010R+2.0vs. baselineR+12.4
Pennsylvania's 2010 Senate race ran 12.4 points more Republican than its 2008 presidential margin.
Pennsylvania's Senate margins
Every comparable D–R contest in our store, 1976–2024
| Year | Margin (D minus R) |
|---|---|
| 1976 | −5.6% |
| 1980 | −2.4% |
| 1982 | −20.1% |
| 1986 | −13.6% |
| 1988 | −34.0% |
| 1992 | −2.8% |
| 1994 | −2.5% |
| 1998 | −26.6% |
| 2000 | −6.9% |
| 2004 | −10.6% |
| 2006 | +17.4% |
| 2010 | −2.0% |
| 2012 | +9.1% |
| 2016 | −1.4% |
| 2018 | +12.9% |
| 2022 | +4.9% |
| 2024 | −0.2% |
Same ballot, 2010PA
Source. MIT Election Data + Science Lab — 2010 US Senate returns, party-classified by literal ballot party · county returns aggregated from precinct-level results. Real returns — nothing estimated.