Jefferson County, MT
MT · Presidential Elections 1892–2024
Jefferson County, MT (Montana) voted R+36.5 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 5,544 votes (66.87%) to 2,516 (30.35%) for Harris.
This represents a R+3.2% swing toward Republicans compared to 2020. Jefferson County is classified as a deep Republican county. Jefferson County has voted Republican in every presidential election since 1972. The county has a population of approximately 12,774.
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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 | 30.4%(2,516) | 66.9%(5,544) | R+36.5 | R+3.2 |
| 2020 | 32.2%(2,625) | 65.6%(5,345) | R+33.4 | R+0.9 |
| 2016 | 29.8%(1,998) | 62.2%(4,177) | R+32.5 | R+5.1 |
| 2012 | 34.8%(2,272) | 62.2%(4,055) | R+27.3 | R+12.3 |
| 2008 | 40.7%(2,582) | 55.8%(3,538) | R+15.1 | D+18.4 |
| 2004 | 32.1%(1,881) | 65.5%(3,844) | R+33.5 | D+1.3 |
| 2000 | 29.3%(1,513) | 64.1%(3,308) | R+34.8 | R+24.9 |
| 1996 | 37.0%(1,775) | 46.8%(2,248) | R+9.9 | R+6.9 |
| 1992 | 33.5%(1,415) | 36.5%(1,541) | R+3.0 | D+3.8 |
| 1988 | 45.5%(1,746) | 52.3%(2,007) | R+6.8 | D+18.1 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Jefferson County, MT • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 37.1%(3,099) | 61.2%(5,108) | R+24.1 | D+3.3 |
| 2020 | 36.3%(2,967) | 63.7%(5,206) | R+27.4 | R+17.2 |
| 2018 | 43.2%(2,954) | 53.5%(3,653) | R+10.2 | D+19.0 |
| 2014 | 34.3%(1,798) | 63.5%(3,330) | R+29.2 | R+18.5 |
| 2012 | 40.9%(2,685) | 51.7%(3,389) | R+10.7 | R+49.6 |
| 2008 | 69.4%(4,294) | 30.6%(1,892) | D+38.8 | D+44.7 |
| 2006 | 45.7%(2,421) | 51.5%(2,730) | R+5.8 | R+32.7 |
| 2002 | 60.4%(2,593) | 33.5%(1,440) | D+26.9 | D+36.0 |
| 2000 | 44.2%(2,288) | 53.4%(2,762) | R+9.2 | R+6.3 |
| 1996 | 44.5%(2,152) | 47.4%(2,293) | R+2.9 | D+29.6 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 31.3%(2,605) | 66.2%(5,507) | R+34.9 | R+6.6 |
| 2020 | 34.2%(2,791) | 62.4%(5,097) | R+28.2 | R+20.7 |
| 2016 | 44.8%(3,086) | 52.3%(3,602) | R+7.5 | D+3.3 |
| 2012 | 42.8%(2,796) | 53.6%(3,502) | R+10.8 | R+35.1 |
| 2008 | 61.2%(3,858) | 36.9%(2,328) | D+24.3 | D+29.5 |
| 2004 | 45.6%(2,649) | 50.8%(2,953) | R+5.2 | D+11.9 |
| 2000 | 40.5%(2,086) | 57.6%(2,967) | R+17.1 | D+48.0 |
| 1996 | 17.5%(836) | 82.5%(3,952) | R+65.1 | R+59.4 |
| 1992 | 47.1%(1,990) | 52.9%(2,231) | R+5.7 | R+1.1 |
| 1988 | 46.7%(1,807) | 51.3%(1,985) | R+4.6 | R+43.9 |
Source: Official state election returns via MIT Election Data + Science Lab