HarrisDemocratic21.2%37,010TrumpRepublican78.0%136,240OtherAll other candidates0.8%1,448
R+56.8- Lead
- 99,230
- Total
- 174,698
- vs nation
- R+55.3
modeled Census-place estimatemodeled estimate
Akashicstate senate district
Ohio 12th State Senate District
Office (updates table and map)
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
President results by year
Modeled candidate-vote estimate on current district boundaries
BidenDemocratic22.2%39,138TrumpRepublican76.3%134,344OtherAll other candidates1.5%2,566
R+54.1- Lead
- 95,206
- Total
- 176,048
- vs nation
- R+58.5
modeled Census-place estimatemodeled estimate
ClintonDemocratic21.5%35,925TrumpRepublican72.5%121,242OtherAll other candidates6.0%10,001
R+51.0- Lead
- 85,317
- Total
- 167,168
- vs nation
- R+53.1
modeled Census-place estimatemodeled estimate
ObamaDemocratic31.0%51,760RomneyRepublican67.1%112,075OtherAll other candidates1.9%3,257
R+36.1- Lead
- 60,315
- Total
- 167,092
- vs nation
- R+40.0
modeled Census-place estimatemodeled estimate
ObamaDemocratic34.1%58,045McCainRepublican63.9%108,743OtherAll other candidates2.0%3,473
R+29.8- Lead
- 50,698
- Total
- 170,261
- vs nation
- R+37.0
modeled Census-place estimatemodeled estimate
KerryDemocratic30.8%51,235BushRepublican68.7%114,488OtherAll other candidates0.5%854
R+38.0- Lead
- 63,253
- Total
- 166,577
- vs nation
- R+35.5
modeled Census-place estimatemodeled estimate
GoreDemocratic32.4%47,037BushRepublican64.6%93,913OtherAll other candidates3.0%4,397
R+32.3- Lead
- 46,876
- Total
- 145,347
- vs nation
- R+32.8
modeled Census-place estimatemodeled estimate
ClintonDemocratic36.7%52,049DoleRepublican50.1%71,096OtherAll other candidates13.2%18,706
R+13.4- Lead
- 19,047
- Total
- 141,851
- vs nation
- R+21.9
modeled Census-place estimatemodeled estimate
Key facts
- 2024 presidential margin
- R+56.8MIT Election Lab
- Population
- 344,2522024 5-year
- Population density
- 127 / sq mi2024 5-year · TIGER/Line
- Land area
- 2,712 sq miTIGER/Line
- Median household income
- $71,0012024 5-year
- White (non-Hispanic)
- 88.0%2024 5-year
- Black
- 4.4%2024 5-year
- Hispanic / Latino
- 2.3%2024 5-year
- Peak Democratic margin
- D+24.2 in 1912MIT Election Lab
- Peak Republican margin
- R+56.8 in 2024MIT Election Lab
- Most similar
- State Senate District 1, OH · twin score 97.1
presidential history
Party record book
Ohio 12th 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
Samuel J. Tilden1876
57.9%
20,819 votes · D+16.0 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 57.2%
Republican
Donald Trump2024
78.0%
136,240 votes · R+56.8 · modeled estimate
Runner-up · Donald Trump, 2020 · 76.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
69,706votes
56.8% of the vote · D+13.7 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 60,685 votes
Republican
Donald Trump2024
136,240votes
78.0% of the vote · R+56.8 · modeled estimate
Runner-up · Donald Trump, 2020 · 134,344 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
William J. Bryan1908
+20.8pts D vs U.S.
Place D+11.2 · U.S. R+9.6 · modeled estimate
Runner-up · William J. Bryan, 1896 · +20.3 pts
Republican
Donald Trump2020
+58.5pts R vs U.S.
Place R+54.1 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2024 · +55.3 pts
current representation
Current officeholders
RSusan ManchesterState Senate · 12
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 2 House
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 | 21.3%36,789 | 78.7%135,662 | 172,451 |
| 2020 | R | 20.6%35,403 | 79.4%136,359 | 171,762 |
Ohio 12th State Senate District sits in the Industrial Midwest. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 24.2 points in 1912 and 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 88% 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 6.
Political twins — state-senate districts
The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
State Senate District 1
Ohio
97.1twin score
2016–2024 trajectory12-yr trend
State Senate District 6
Missouri
93.0twin score
2012–2024 trajectory
State Senate District 27
Missouri
92.2twin score
2012–2024 trajectory≠ German ancestry
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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Ohio 12th State Senate District. Akashic. https://akashic.app/sld-upper/39012/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Places within Ohio 12th State Senate District
Frequently asked questions
How did Ohio 12th State Senate District vote in 2024?
In 2024, Ohio 12th State Senate District voted Republican by 56.8 points (R+56.8), carried by the Republican candidate. Out of 174,698 votes cast, 37,010 went Democratic and 136,240 went Republican.
When did Ohio 12th State Senate District last vote Democratic?
The most recent presidential election in which Ohio 12th State Senate District voted Democratic was 1964.
How many people live in Ohio 12th State Senate District?
Ohio 12th State Senate District has a population of 344,252 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Ohio 12th State Senate District?
Median household income in Ohio 12th State Senate District is $71,001 — below the national median of $80,734. The Ohio state median is $71,389.
What is the political history of Ohio 12th State Senate District?
Akashic tracks 38 presidential elections in Ohio 12th State Senate District from 1876 to 2024. Of those, 13 went Democratic and 25 went Republican.