Jefferson County, WI
WI · Presidential Elections 1892–2024
Jefferson County, WI (Wisconsin) voted R+16.3 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 28,771 votes (57.37%) to 20,574 (41.03%) for Harris.
This represents a R+1.1% swing toward Republicans compared to 2020. Jefferson County is classified as a solid Republican county. Jefferson County has voted Republican in every presidential election since 2012. The county has a population of approximately 86,003.
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 | 41.0%(20,574) | 57.4%(28,771) | R+16.3 | R+1.1 |
| 2020 | 41.5%(19,904) | 56.7%(27,208) | R+15.2 | D+0.7 |
| 2016 | 38.4%(16,569) | 54.3%(23,417) | R+15.9 | R+8.3 |
| 2012 | 45.5%(20,158) | 53.1%(23,517) | R+7.6 | R+8.4 |
| 2008 | 49.7%(21,448) | 48.9%(21,096) | D+0.8 | D+14.7 |
| 2004 | 42.6%(17,925) | 56.5%(23,776) | R+13.9 | R+2.8 |
| 2000 | 42.1%(15,203) | 53.2%(19,204) | R+11.1 | R+12.8 |
| 1996 | 44.3%(13,188) | 42.6%(12,681) | D+1.7 | D+6.2 |
| 1992 | 35.3%(11,593) | 39.9%(13,072) | R+4.5 | D+5.0 |
| 1988 | 44.9%(11,816) | 54.3%(14,309) | R+9.5 | D+14.8 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Jefferson County, WI • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 41.5%(20,631) | 56.4%(28,005) | R+14.8 | D+1.4 |
| 2022 | 41.8%(16,141) | 58.0%(22,402) | R+16.2 | R+11.6 |
| 2018 | 47.6%(18,055) | 52.3%(19,809) | R+4.6 | D+11.3 |
| 2016 | 40.5%(17,149) | 56.5%(23,902) | R+16.0 | R+6.0 |
| 2012 | 43.9%(19,081) | 53.8%(23,393) | R+9.9 | D+10.5 |
| 2010 | 39.1%(12,344) | 59.5%(18,801) | R+20.4 | R+44.3 |
| 2006 | 60.2%(18,511) | 36.3%(11,161) | D+23.9 | D+28.8 |
| 2004 | 47.3%(19,684) | 52.2%(21,725) | R+4.9 | R+14.7 |
| 2000 | 54.2%(19,284) | 44.4%(15,800) | D+9.8 | D+21.8 |
| 1998 | 43.3%(10,236) | 55.4%(13,081) | R+12.0 | R+20.6 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 43.3%(16,765) | 55.5%(21,488) | R+12.2 | D+2.1 |
| 2018 | 42.0%(16,018) | 56.3%(21,475) | R+14.3 | D+6.9 |
| 2014 | 38.8%(13,876) | 60.0%(21,443) | R+21.2 | D+1.8 |
| 2010 | 37.8%(11,909) | 60.8%(19,155) | R+23.0 | R+17.2 |
| 2006 | 46.0%(14,247) | 51.8%(16,038) | R+5.8 | D+2.1 |
| 2002 | 36.7%(9,243) | 44.6%(11,237) | R+7.9 | D+24.9 |
| 1998 | 32.5%(7,647) | 65.3%(15,363) | R+32.8 | D+10.1 |
| 1994 | 27.4%(5,369) | 70.3%(13,779) | R+42.9 | R+17.3 |
| 1990 | 37.2%(6,305) | 62.8%(10,646) | R+25.6 | R+6.8 |
| 1986 | 40.2%(7,876) | 59.0%(11,551) | R+18.8 | R+19.9 |
Source: Official state election returns via MIT Election Data + Science Lab