Ohio State Senate seat · lines in effect since 2024
Ohio Senate District 21
A district of about 370,000 people, 58% Black, 35% of adults with a bachelor's degree. It votes D+67.6 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 | 2026 | |
|---|---|---|---|---|
| U.S. Senate | D+55.0 | D+74.6 | D+69.3 | No race |
| Governor | No race | D+67.7 | No race | No race |
| Ohio State Senate | No race | No race | No race | D+74.9 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: Ohio Secretary of StateUpdated 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 21.
Higher than 69% of seats.
Lowest of 33 seats.
Lower than 69% of seats.
Highest of 33 seats.
Higher than 53% of seats.
Denser than 97% 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 934% Black · 42% college gradsD+50.2Held DDistrict 15
41% Black · 31% college gradsD+58.6Held DDistrict 23
27% Black · 38% college gradsD+42.2Held DDistrict 6
23% Black · 33% college gradsD+10.7Not 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
Who has held it
These lines took effect in 2024.
- Kent Smith (D)
2027– · Won 2026 by 74.9
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)