Petroleum County, MT
MT · Presidential Elections 1928–2024
Petroleum County, MT (Montana) voted R+76.2 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 284 votes (87.65%) to 37 (11.42%) for Harris.
This represents a R+1.8% swing toward Republicans compared to 2020. Petroleum County is classified as a deep Republican county. Petroleum County has voted Republican in every presidential election since 1968. The county has a population of approximately 447.
Quick Stats
Demographics
Community Profile
Religious Composition
Source: Religion Census 2020Ancestry Groups
Source: Census ACSTop reported ancestry groups (compared to national average).
Age Distribution
Employment by Industry
Census ACSPresidential Elections
Presidential Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 11.4%(37) | 87.7%(284) | R+76.2 | R+1.8 |
| 2020 | 11.2%(39) | 85.6%(298) | R+74.4 | D+2.6 |
| 2016 | 9.3%(30) | 86.3%(278) | R+77.0 | R+12.9 |
| 2012 | 16.4%(49) | 80.5%(240) | R+64.1 | R+11.1 |
| 2008 | 22.7%(68) | 75.7%(227) | R+53.0 | D+6.2 |
| 2004 | 18.8%(55) | 78.1%(228) | R+59.2 | D+12.0 |
| 2000 | 11.8%(36) | 83.0%(254) | R+71.2 | R+28.5 |
| 1996 | 21.4%(62) | 64.1%(186) | R+42.8 | R+17.8 |
| 1992 | 20.6%(61) | 45.6%(135) | R+25.0 | D+12.4 |
| 1988 | 30.1%(91) | 67.5%(204) | R+37.4 | D+12.2 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Petroleum County, MT • 1928–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 15.2%(50) | 83.5%(274) | R+68.3 | D+2.6 |
| 2020 | 14.5%(51) | 85.5%(300) | R+70.9 | R+10.0 |
| 2018 | 18.6%(58) | 79.5%(248) | R+60.9 | D+7.7 |
| 2014 | 15.1%(36) | 83.7%(200) | R+68.6 | R+25.5 |
| 2012 | 24.4%(73) | 67.6%(202) | R+43.1 | R+66.4 |
| 2008 | 61.6%(183) | 38.4%(114) | D+23.2 | D+63.2 |
| 2006 | 27.9%(74) | 67.9%(180) | R+40.0 | R+56.7 |
| 2002 | 53.9%(132) | 37.1%(91) | D+16.7 | D+73.6 |
| 2000 | 20.3%(63) | 77.2%(240) | R+56.9 | R+21.2 |
| 1996 | 30.6%(90) | 66.3%(195) | R+35.7 | D+31.7 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 10.6%(35) | 87.0%(287) | R+76.4 | R+3.5 |
| 2020 | 12.6%(44) | 85.4%(299) | R+72.9 | R+20.6 |
| 2016 | 22.4%(74) | 74.6%(247) | R+52.3 | D+4.3 |
| 2012 | 20.7%(62) | 77.3%(231) | R+56.5 | R+52.5 |
| 2008 | 46.8%(139) | 50.8%(151) | R+4.0 | D+27.1 |
| 2004 | 32.9%(95) | 64.0%(185) | R+31.1 | D+22.1 |
| 2000 | 22.6%(70) | 75.8%(235) | R+53.2 | D+25.9 |
| 1996 | 10.5%(30) | 89.5%(257) | R+79.1 | R+41.3 |
| 1992 | 31.1%(92) | 68.9%(204) | R+37.8 | R+14.2 |
| 1988 | 36.6%(113) | 60.2%(186) | R+23.6 | R+70.3 |
Source: Official state election returns via MIT Election Data + Science Lab