Pennsylvania 12th Congressional District
Congressional District 12
Covers parts of Allegheny County and Westmoreland County.
Who Holds This Seat
Running in 2026
Democrat · U.S. Representative
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Sep 24
- Raised
- $1,485,046cycle to date through Jun 30
- Cash on Hand
- $1,649,288cycle to date through Jun 30
View on FEC.govFEC, cycle to date through Jun 30, 2026
Republican
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Sep 24
- Raised
- $40,174cycle to date through Jun 30
- Cash on Hand
- $9,521cycle to date through Jun 30
View on FEC.govFEC, cycle to date through Jun 30, 2026
On File, Not Running
The District
Includes Pittsburgh (part), Murrysville, Plum (part), Monroeville, Jefferson Hills, West Mifflin, Bethel Park, White Oak, Baldwin, McKeesport, Lincoln, Level Green and 59 more.
878 precincts · District lines: Congressional lines: U.S. Census Bureau (1:500,000 cartographic boundary, 119th Congress) · Precinct lines: U.S. Census Bureau, 2020 TIGER/Line voting districts (VTD20)
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President874 precinctsPennsylvania Department of StateOfficial precinct returns | Kamala D Harris & Tim Walz (D)255,713 · 59.5% | Donald J Trump & Jd Vance (R)170,248 · 39.6% | D+19.9 | 429,941 | Pennsylvania Department of StateOfficial precinct returns |
| 2024 U.S. Senate874 precinctsPennsylvania Department of StateOfficial precinct returns | Robert P Casey Jr (D)253,496 · 59.5% | Dave Mccormick (R)161,402 · 37.9% | D+21.6 | 426,063 | Pennsylvania Department of StateOfficial precinct returns |
| 2022 U.S. Senate874 precinctsPennsylvania Department of StateOfficial precinct returns | John Fetterman (D)215,460 · 63.7% | Mehmet Oz (R)117,667 · 34.8% | D+28.9 | 338,444 | Pennsylvania Department of StateOfficial precinct returns |
| 2022 Governor874 precinctsPennsylvania Department of StateOfficial precinct returns | Josh Shapiro And Austin Davis (D)231,394 · 68.5% | Douglas V Mastriano And Carrie Lewis Delrosso (R)100,899 · 29.9% | D+38.6 | 337,772 | Pennsylvania Department of StateOfficial precinct returns |
| 2020 President874 precinctsPennsylvania Department of StateOfficial precinct returns | Joseph Robinette Biden Jr (D)256,344 · 59.8% | Donald J. Trump (R)167,618 · 39.1% | D+20.7 | 428,732 | Pennsylvania Department of StateOfficial precinct returns |
Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
U.S. House District 12
2024 Pennsylvania General Election · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Summer Lynn LeeDemocrat | Democrat | 234,802 | 56.4% |
| James Kevin HayesRepublican | Republican | 181,426 | 43.6% |
Official precinct returns (PA Department of State bulk data; Philadelphia City Commissioners certified file) · Pennsylvania Department of State — official statewide precinct returns…
U.S. House District 12
2022 Pennsylvania General Election · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| Summer LeeDemocrat | Democrat | 184,674 | 56.2% |
| Michael J DoyleRepublican | Republican | 143,946 | 43.8% |
Official precinct returns (PA Department of State bulk data; Philadelphia City Commissioners certified file) · Pennsylvania Department of State — official statewide precinct returns…
U.S. House District 12
2020 Pennsylvania General Election · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Frederick B KellerRepublican | Republican | 241,052 | 70.8% |
| Lee GriffinDemocrat | Democrat | 99,216 | 29.2% |
Official precinct returns (PA Department of State bulk data; Philadelphia City Commissioners certified file) · Pennsylvania Department of State — official statewide precinct returns…