- Lead
- 55,016
- Total
- 190,537
- vs nation
- R+27.4
Ohio 20th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 51,701
- Total
- 188,356
- vs nation
- R+31.9
- Lead
- 47,637
- Total
- 168,777
- vs nation
- R+30.3
- Lead
- 23,364
- Total
- 163,308
- vs nation
- R+18.2
- Lead
- 26,155
- Total
- 164,467
- vs nation
- R+23.2
- Lead
- 37,825
- Total
- 156,878
- vs nation
- R+21.7
- Lead
- 29,208
- Total
- 124,714
- vs nation
- R+23.9
- Lead
- 13,306
- Total
- 116,528
- vs nation
- R+19.9
Key facts
- 2024 presidential margin
- R+28.9MIT Election Lab
- Population
- 359,7742024 5-year
- Population density
- 252 / sq mi2024 5-year · TIGER/Line
- Land area
- 1,426 sq miTIGER/Line
- Median household income
- $86,5242024 5-year
- White (non-Hispanic)
- 84.7%2024 5-year
- Black
- 5.7%2024 5-year
- Hispanic / Latino
- 2.3%2024 5-year
- Peak Democratic margin
- D+21.1 in 1912MIT Election Lab
- Peak Republican margin
- R+47.1 in 1984MIT Election Lab
- Most similar
- State Senate District 10, OH · twin score 96.4
presidential history
Party record book
Ohio 20th State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
59.9%
43,601 votes · D+19.8 · modeled estimate
Runner-up · Samuel J. Tilden, 1876 · 58.2%
Republican
Ronald Reagan1984
73.1%
73,425 votes · R+47.1 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 69.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2012
68,249votes
41.8% of the vote · R+14.3 · modeled estimate
Runner-up · Barack Obama, 2008 · 67,483 votes
Republican
Donald Trump2024
121,923votes
64.0% of the vote · R+28.9 · modeled estimate
Runner-up · Donald Trump, 2020 · 118,493 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
James M. Cox1920
+22.5pts D vs U.S.
Place R+3.7 · U.S. R+26.2 · modeled estimate
Runner-up · William J. Bryan, 1908 · +16.6 pts
Republican
Donald Trump2020
+31.9pts R vs U.S.
Place R+27.4 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +30.3 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | R | 33.5%60,581 | 66.5%120,306 | 180,887 |
| 2020 | R | 31.8%56,140 | 68.2%120,435 | 176,575 |
Ohio 20th State Senate District sits in the Industrial Midwest. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 21.1 points in 1912 and a Republican high of 47.1 points in 1984. Between 2020 and 2024 the district moved 1.4 points toward the Republican candidate; the 2024 margin was 28.9 points.
A population of 359,774, a 85% non-Hispanic-white share, and a median household income of $86,524 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 10 and State Senate District 14.
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.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
Ohio 20th State Senate District. Akashic. https://akashic.app/sld-upper/39020/. Accessed May 20, 2026. License: CC BY 4.0.