Presidential elections · 2000–2024
Allegheny County, PA — Presidential Election Results (2000–2024)
In 2024, Allegheny County, Pennsylvania voted for Kamala D. Harris (Democratic) by D+20.3 — 429,916 Democratic to 283,595 Republican of 720,504 votes cast. From 2020 to 2024 it shifted 0.1 points toward Republicans. That makes it 22.0 points more Democratic than Pennsylvania overall (R+1.7).
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Margin by election, 2000–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
Every election in Allegheny County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 429,916 | 283,595 | 6,993 | 59.7% | 39.4% | D+20.3 |
| 2020 | 429,065 | 282,324 | 8,344 | 59.6% | 39.2% | D+20.4 |
| 2016 | 367,617 | 259,480 | 23,017 | 56.5% | 39.9% | D+16.6 |
| 2012 | 352,687 | 262,039 | 7,355 | 56.7% | 42.1% | D+14.6 |
| 2008 | 373,153 | 272,347 | 5,880 | 57.3% | 41.8% | D+15.5 |
| 2004 | 368,912 | 271,925 | 4,632 | 57.2% | 42.1% | D+15.0 |
| 2000 | 329,963 | 235,361 | 17,154 | 56.6% | 40.4% | D+16.2 |
Allegheny County presidential elections — FAQ
Who carried Allegheny County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried Allegheny County, Pennsylvania in 2024 by D+20.3, with 720,504 votes cast. Data: MIT Election Data & Science Lab.
How did Allegheny County shift between 2020 and 2024?+
Allegheny County shifted 0.1 points toward Republicans between 2020 (D+20.4) and 2024 (D+20.3).
Is Allegheny County more Democratic or Republican than Pennsylvania overall?+
In 2024, Allegheny County went D+20.3 while Pennsylvania overall went R+1.7 — 22.0 points more Democratic than the state.
Where does this election data come from?+
County-level presidential returns (2000–2024) come from the MIT Election Data and Science Lab (MEDSL), published on the Harvard Dataverse. pumsdata is an independent product that makes the data easy to map and compare, and is not affiliated with MEDSL or Harvard.