Presidential elections · 2000–2024
Chester County, PA — Presidential Election Results (2000–2024)
In 2024, Chester County, Pennsylvania voted for Kamala D. Harris (Democratic) by D+14.5 — 184,281 Democratic to 137,299 Republican of 324,964 votes cast. From 2020 to 2024 it shifted 2.6 points toward Republicans. That makes it 16.2 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 Chester County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 184,281 | 137,299 | 3,384 | 56.7% | 42.3% | D+14.5 |
| 2020 | 182,372 | 128,565 | 3,565 | 58.0% | 40.9% | D+17.1 |
| 2016 | 141,682 | 116,114 | 11,004 | 52.7% | 43.2% | D+9.5 |
| 2012 | 124,311 | 124,840 | 2,822 | 49.3% | 49.5% | R+0.2 |
| 2008 | 137,833 | 114,421 | 2,051 | 54.2% | 45.0% | D+9.2 |
| 2004 | 109,708 | 120,036 | 1,079 | 47.5% | 52.0% | R+4.5 |
| 2000 | 82,047 | 100,080 | 5,435 | 43.7% | 53.4% | R+9.6 |
Chester County presidential elections — FAQ
Who carried Chester County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried Chester County, Pennsylvania in 2024 by D+14.5, with 324,964 votes cast. Data: MIT Election Data & Science Lab.
How did Chester County shift between 2020 and 2024?+
Chester County shifted 2.6 points toward Republicans between 2020 (D+17.1) and 2024 (D+14.5).
Is Chester County more Democratic or Republican than Pennsylvania overall?+
In 2024, Chester County went D+14.5 while Pennsylvania overall went R+1.7 — 16.2 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.