Presidential elections · 2000–2024
Washington County, OR — Presidential Election Results (2000–2024)
In 2024, Washington County, Oregon voted for Kamala D. Harris (Democratic) by D+33.7 — 193,013 Democratic to 92,590 Republican of 297,949 votes cast. From 2020 to 2024 it shifted 0.9 points toward Republicans. That makes it 19.4 points more Democratic than Oregon overall (D+14.3).
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 Washington County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 193,013 | 92,590 | 12,346 | 64.8% | 31.1% | D+33.7 |
| 2020 | 209,940 | 99,073 | 11,313 | 65.5% | 30.9% | D+34.6 |
| 2016 | 153,251 | 83,197 | 32,784 | 56.9% | 30.9% | D+26.0 |
| 2012 | 135,291 | 93,974 | 7,758 | 57.1% | 39.6% | D+17.4 |
| 2008 | 141,544 | 89,185 | 5,903 | 59.8% | 37.7% | D+22.1 |
| 2004 | 121,140 | 107,223 | 2,945 | 52.4% | 46.4% | D+6.0 |
| 2000 | 90,662 | 86,091 | 9,221 | 48.7% | 46.3% | D+2.5 |
Washington County presidential elections — FAQ
Who carried Washington County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried Washington County, Oregon in 2024 by D+33.7, with 297,949 votes cast. Data: MIT Election Data & Science Lab.
How did Washington County shift between 2020 and 2024?+
Washington County shifted 0.9 points toward Republicans between 2020 (D+34.6) and 2024 (D+33.7).
Is Washington County more Democratic or Republican than Oregon overall?+
In 2024, Washington County went D+33.7 while Oregon overall went D+14.3 — 19.4 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.