Ohio State Senate seat · lines in effect since 2024
Ohio Senate District 12
A district of about 337,000 people, 20% of adults with a bachelor's degree. It votes R+56.7 relative to the nation for president.
Where it sits among all 33 seats
Every Ohio State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2016 | 2018 | 2024 | |
|---|---|---|---|
| U.S. Senate | R+54.3 | R+28.6 | R+45.1 |
| Governor | No race | R+44.9 | No race |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 33 seats. Small marks are other seats in Ohio. The black marker is District 12.
Lower than 97% of seats.
Higher than 91% of seats.
Lower than 81% of seats.
Lower than 72% of seats.
Lower than 88% of seats.
Less dense than 88% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 17OhioR+51.1Held RDistrict 31
21% college gradsR+42.6Held RDistrict 14
26% college gradsR+43.2Not up in 2026District 30
21% college gradsR+39.1Not up in 2026
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET