Elections / 2018 · Senate · PA
Pennsylvania — 2018 U.S. Senate election
Recent presidential results
Akashicstate2018 Senate electionPennsylvania · U.S. SenateJr.D+13.1
How it voted
Share of the 2018 vote
| Robert P Casey Jr. ✓Democrat | 55.6% | 2,777,680 |
|---|---|---|
| Louis J. BarlettaRepublican | 42.7% | 2,134,848 |
| Dale R Kerns Jr.Libertarian | 1.0% | 50,907 |
2018Senate margin
D+60R+60
67 counties, each filled by 2018 D-vs-R margin. Hover any county for its result.
County-level results (67 counties) — table
| County | Winner | Margin |
|---|---|---|
| ADAMS, PA | Republican | R+21.8 |
| ALLEGHENY, PA | Democratic | D+33.1 |
| ARMSTRONG, PA | Republican | R+28.1 |
| BEAVER, PA | Democratic | D+3.7 |
| BEDFORD, PA | Republican | R+50.3 |
| BERKS, PA | Democratic | D+3.8 |
| BLAIR, PA | Republican | R+30.6 |
| BRADFORD, PA | Republican | R+30.0 |
| BUCKS, PA | Democratic | D+14.0 |
| BUTLER, PA | Republican | R+20.0 |
| CAMBRIA, PA | Republican | R+11.6 |
| CAMERON, PA | Republican | R+24.2 |
| CARBON, PA | Republican | R+21.2 |
| CENTRE, PA | Democratic | D+17.2 |
| CHESTER, PA | Democratic | D+20.2 |
| CLARION, PA | Republican | R+27.9 |
| CLEARFIELD, PA | Republican | R+27.3 |
| CLINTON, PA | Republican | R+12.8 |
| COLUMBIA, PA | Republican | R+20.3 |
| CRAWFORD, PA | Republican | R+20.3 |
| CUMBERLAND, PA | Republican | R+6.5 |
| DAUPHIN, PA | Democratic | D+11.4 |
| DELAWARE, PA | Democratic | D+31.4 |
| ELK, PA | Republican | R+18.7 |
| ERIE, PA | Democratic | D+18.4 |
| FAYETTE, PA | Republican | R+2.3 |
| FOREST, PA | Republican | R+26.3 |
| FRANKLIN, PA | Republican | R+35.2 |
| FULTON, PA | Republican | R+58.7 |
| GREENE, PA | Republican | R+4.9 |
| HUNTINGDON, PA | Republican | R+33.7 |
| INDIANA, PA | Republican | R+12.2 |
| JEFFERSON, PA | Republican | R+41.3 |
| JUNIATA, PA | Republican | R+40.6 |
| LACKAWANNA, PA | Democratic | D+23.2 |
| LANCASTER, PA | Republican | R+8.4 |
| LAWRENCE, PA | Republican | R+9.5 |
| LEBANON, PA | Republican | R+23.3 |
| LEHIGH, PA | Democratic | D+16.4 |
| LUZERNE, PA | Republican | R+8.2 |
| LYCOMING, PA | Republican | R+30.7 |
| MCKEAN, PA | Republican | R+34.6 |
| MERCER, PA | Republican | R+10.1 |
| MIFFLIN, PA | Republican | R+40.9 |
| MONROE, PA | Democratic | D+12.0 |
| MONTGOMERY, PA | Democratic | D+32.0 |
| MONTOUR, PA | Republican | R+13.9 |
| NORTHAMPTON, PA | Democratic | D+10.4 |
| NORTHUMBERLAND, PA | Republican | R+25.6 |
| PERRY, PA | Republican | R+37.4 |
| PHILADELPHIA, PA | Democratic | D+74.8 |
| PIKE, PA | Republican | R+14.8 |
| POTTER, PA | Republican | R+48.8 |
| SCHUYLKILL, PA | Republican | R+26.1 |
| SNYDER, PA | Republican | R+33.6 |
| SOMERSET, PA | Republican | R+33.4 |
| SULLIVAN, PA | Republican | R+27.8 |
| SUSQUEHANNA, PA | Republican | R+28.8 |
| TIOGA, PA | Republican | R+41.5 |
| UNION, PA | Republican | R+16.7 |
| VENANGO, PA | Republican | R+23.0 |
| WARREN, PA | Republican | R+23.3 |
| WASHINGTON, PA | Republican | R+3.3 |
| WAYNE, PA | Republican | R+23.0 |
| WESTMORELAND, PA | Republican | R+10.6 |
| WYOMING, PA | Republican | R+25.5 |
| YORK, PA | Republican | R+15.7 |
presidential baselinePresident 2016R+0.7Senate 2018D+12.9vs. baselineD+13.6
Pennsylvania's 2018 Senate race ran 13.6 points more Democratic than its 2016 presidential margin.
Pennsylvania's Senate margins
Every 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, 2018PA
Source. MIT Election Data + Science Lab — 2018 US Senate returns, party-classified by literal ballot party · county returns aggregated from precinct-level results. Real returns — nothing estimated.