Ohio Senate District 12
State Senate District 12
Covers all of Mercer County, Champaign County, Allen County, Shelby County and Auglaize County; parts of Darke County and Logan County.
Who Holds This Seat
Running in 2026
No 2026 candidates are on file for this seat yet.
The District
Includes Lima, Bellefontaine, Fort Shawnee, Sidney, Urbana, Celina, Greenville, Maria Stein, St. Marys, Wapakoneta, Bluffton (part), Coldwater and 57 more.
278 precincts · District lines: State senate lines: U.S. Census Bureau (1:500,000 cartographic boundary) · Precinct lines: U.S. Census Bureau, 2020 TIGER/Line voting districts (VTD20)
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President275 precinctsOhio Secretary of StateOfficial canvass | Donald J. Trump and JD Vance (R)132,664 · 78.0% | Kamala D. Harris and Tim Walz (D)36,010 · 21.2% | R+56.8 | 170,052 | Ohio Secretary of StateOfficial canvass |
| 2024 U.S. Senate275 precinctsOhio Secretary of StateOfficial canvass | Bernie Moreno (R)122,175 · 72.4% | Sherrod Brown (D)40,598 · 24.1% | R+48.4 | 168,718 | Ohio Secretary of StateOfficial canvass |
| 2022 U.S. Senate276 precinctsOhio Secretary of StateOfficial canvass | JD Vance (R)94,979 · 76.6% | Tim Ryan (D)28,945 · 23.4% | R+53.3 | 123,924 | Ohio Secretary of StateOfficial canvass |
| 2022 Governor276 precinctsOhio Secretary of StateOfficial canvass | Mike DeWine and Jon Husted (R)102,913 · 83.6% | Nan Whaley and Cheryl L. Stephens (D)20,168 · 16.4% | R+67.2 | 123,081 | Ohio Secretary of StateOfficial canvass |
| 2020 President278 precinctsOhio Secretary of StateOfficial canvass | Donald J. Trump and Michael R. Pence (R)134,344 · 76.3% | Joseph R. Biden and Kamala D. Harris (D)39,138 · 22.2% | R+54.1 | 175,997 | Ohio Secretary of StateOfficial canvass |
Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
State Senator - District 12
Ohio General Election 2024-11-05 · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Susan ManchesterRepublican | Republican | 140,219 | 100.0% |
Official canvass — Ohio Secretary of State · Ohio Secretary of State — Official Election Results
Sources (2)
- Official canvass — Ohio Secretary of State (statewide races by precinct). File retrieved from Internet Archive capture 20251216225505 of the SOS URL because ohiosos.gov blocks automated downloads
- write-in candidates have no precinct detail in the SOS file
State Senator - District 12
Ohio General Election 2020-11-03 · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Matt HuffmanRepublican | Republican | 129,218 | 79.3% |
| Ken PolingDemocrat | Democrat | 33,800 | 20.7% |
Official canvass — Ohio Secretary of State · Ohio Secretary of State — Official Election Results
Sources (2)
- Official canvass — Ohio Secretary of State (statewide races by precinct). File retrieved from Internet Archive capture 20250916084702 of the SOS URL because ohiosos.gov blocks automated downloads
- write-in candidates have no precinct detail in the SOS file