Ohio Political Map | Democrat & Republican Areas in Ohio

By the BestNeighborhood data science team. Last updated May 2026.

Ohio leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.

 

About 75% of adults in Ohio typically vote, above the U.S. average of about 62%. Among adults in Ohio, ~35% vote Democratic, ~40% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.

How Ohio compares

Among states within 500 miles, Ohio leans more Republican than 11 of 16 neighbors.

Politics vary noticeably by county within Ohio. The northeast side runs the most Democratic (D+10) and the southeast side runs the most Republican (R+50), a spread of about 60 points.

Why Ohio leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Ohio. The lean here lands roughly where demographic data alone would predict.

Uninsured rate and voter turnout

Places with a low uninsured rate tend to turn out at a higher rate; Ohio sits in the bottom quarter nationally on this measure. Insurance coverage does not directly drive turnout; it reflects the income and stability that line up with who votes.

Why turnout in Ohio looks the way it does

Turnout in Ohio sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.

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Sources and methodology

Precinct-level voting records used to fit the model come from Ohio Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.

Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.

Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.