Ohio 12th State Senate District
Akashic| Donald Trump ✓Republican | 78.0% | 136,240 |
|---|---|---|
| Kamala HarrisDemocratic | 21.2% | 37,010 |
| Chase OliverLibertarian | 0.8% | 1,419 |
County-level results (7 counties) — table
| County | Winner | Margin |
|---|---|---|
| Allen County, OH | Republican | R+43.9 |
| Auglaize County, OH | Republican | R+64.3 |
| Champaign County, OH | Republican | R+50.5 |
| Darke County, OH | Republican | R+65.1 |
| Logan County, OH | Republican | R+56.0 |
| Mercer County, OH | Republican | R+66.5 |
| Shelby County, OH | Republican | R+64.6 |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 21.2%Harris37,010 | 78.0%Trump136,240 | 0.8%Oliver1,419 | 174,669 | ||
| R | 22.2%Biden39,138 | 76.3%Trump134,344 | 1.4%Jorgensen2,515 | 175,997 | ||
| R | 21.9%Clinton35,925 | 74.0%Trump121,242 | 4.1%Stein6,715 | 163,882 | ||
| R | 31.3%Obama51,197 | 68.7%Romney112,317 | 0.0% | 163,514 | ||
| R | 33.9%Obama57,739 | 64.0%McCain108,855 | 2.1%Nader3,610 | 170,204 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −30.0% |
| 2012 | −37.4% |
| 2016 | −52.1% |
| 2020 | −54.1% |
| 2024 | −56.8% |
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+41, this district ranks among the most lopsided in Ohio's state senate map, signaling a deeply consolidated Republican base and limited competitive pressure in most election cycles.
Across the recorded series it reached a Republican high of 56.8 points in 2024. Between 2020 and 2024 the district moved 2.7 points toward the Republican candidate; the 2024 margin was 56.8 points.
A population of 344,252, a 89% non-Hispanic-white share, and a median household income of $71,001 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 1 and State Senate District 50.
The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Ohio 12th State Senate District. Akashic. https://akashic.app/sld-upper/39012/. Accessed May 20, 2026. License: CC BY 4.0.