Presidential elections · 2000–2024
Petroleum County, MT — Presidential Election Results (2000–2024)
In 2024, Petroleum County, Montana voted for Donald J. Trump (Republican) by R+76.2 — 37 Democratic to 284 Republican of 324 votes cast. From 2020 to 2024 it shifted 1.8 points toward Republicans. That makes it 56.3 points more Republican than Montana overall (R+19.9).
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 Petroleum County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 37 | 284 | 3 | 11.4% | 87.7% | R+76.2 |
| 2020 | 39 | 298 | 11 | 11.2% | 85.6% | R+74.4 |
| 2016 | 30 | 278 | 14 | 9.3% | 86.3% | R+77.0 |
| 2012 | 49 | 240 | 9 | 16.4% | 80.5% | R+64.1 |
| 2008 | 68 | 227 | 5 | 22.7% | 75.7% | R+53.0 |
| 2004 | 55 | 228 | 9 | 18.8% | 78.1% | R+59.2 |
| 2000 | 36 | 254 | 16 | 11.8% | 83.0% | R+71.2 |
Petroleum County presidential elections — FAQ
Who carried Petroleum County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Petroleum County, Montana in 2024 by R+76.2, with 324 votes cast. Data: MIT Election Data & Science Lab.
How did Petroleum County shift between 2020 and 2024?+
Petroleum County shifted 1.8 points toward Republicans between 2020 (R+74.4) and 2024 (R+76.2).
Is Petroleum County more Democratic or Republican than Montana overall?+
In 2024, Petroleum County went R+76.2 while Montana overall went R+19.9 — 56.3 points more Republican 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.