Mercer County, OH
OH · Presidential Elections 1892–2024
Mercer County, OH (Ohio) voted R+66.5 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 19,710 votes (82.72%) to 3,865 (16.22%) for Harris.
This represents a R+1.6% swing toward Republicans compared to 2020. Mercer County is classified as a deep Republican county. Mercer County has voted Republican in every presidential election since 1972. The county has a population of approximately 42,484.
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 | 16.2%(3,865) | 82.7%(19,710) | R+66.5 | R+1.6 |
| 2020 | 17.0%(4,030) | 81.9%(19,452) | R+64.9 | R+0.9 |
| 2016 | 15.3%(3,384) | 79.4%(17,506) | R+64.0 | R+9.9 |
| 2012 | 21.8%(4,745) | 75.9%(16,561) | R+54.2 | R+10.7 |
| 2008 | 27.5%(5,853) | 70.9%(15,100) | R+43.4 | D+7.0 |
| 2004 | 24.5%(5,118) | 74.9%(15,650) | R+50.4 | R+10.7 |
| 2000 | 28.5%(5,212) | 68.3%(12,485) | R+39.8 | R+25.4 |
| 1996 | 35.7%(6,300) | 50.0%(8,832) | R+14.3 | D+6.1 |
| 1992 | 26.3%(4,883) | 46.8%(8,683) | R+20.5 | D+17.5 |
| 1988 | 30.6%(4,978) | 68.5%(11,162) | R+38.0 | D+6.1 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Mercer County, OH • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 18.5%(4,337) | 78.5%(18,432) | R+60.1 | D+1.8 |
| 2022 | 19.1%(3,389) | 80.9%(14,390) | R+61.9 | R+14.4 |
| 2018 | 26.3%(4,504) | 73.7%(12,637) | R+47.4 | D+22.0 |
| 2016 | 13.6%(2,919) | 83.1%(17,812) | R+69.5 | R+17.8 |
| 2012 | 22.2%(4,736) | 73.8%(15,743) | R+51.6 | D+5.2 |
| 2010 | 19.6%(3,073) | 76.3%(12,000) | R+56.8 | R+26.5 |
| 2006 | 34.9%(5,413) | 65.1%(10,118) | R+30.3 | D+27.4 |
| 2004 | 21.1%(4,379) | 78.9%(16,334) | R+57.7 | R+7.8 |
| 2000 | 23.7%(4,259) | 73.6%(13,239) | R+49.9 | R+24.2 |
| 1998 | 37.1%(4,927) | 62.9%(8,342) | R+25.7 | D+10.3 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 12.6%(2,230) | 87.1%(15,403) | R+74.5 | R+13.7 |
| 2018 | 18.2%(3,161) | 79.0%(13,697) | R+60.8 | D+6.5 |
| 2014 | 15.6%(1,914) | 82.9%(10,155) | R+67.3 | R+26.8 |
| 2010 | 27.5%(4,396) | 68.0%(10,852) | R+40.5 | R+16.6 |
| 2006 | 36.4%(5,692) | 60.3%(9,429) | R+23.9 | D+28.5 |
| 2002 | 21.8%(3,237) | 74.2%(11,001) | R+52.3 | R+25.9 |
| 1998 | 33.8%(4,337) | 60.3%(7,730) | R+26.5 | D+18.3 |
| 1994 | 25.6%(3,382) | 70.4%(9,308) | R+44.8 | R+12.9 |
| 1990 | 34.0%(4,704) | 66.0%(9,122) | R+32.0 | R+49.7 |
| 1986 | 58.9%(7,217) | 41.1%(5,043) | D+17.7 | D+18.0 |
Source: Official state election returns via MIT Election Data + Science Lab