Gahanna, OH Political Map | Democrat & Republican Areas in Gahanna

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

Gahanna leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.

 

About 89% of adults in Gahanna typically vote, above the U.S. average of about 62%. Among adults in Gahanna, ~54% vote Democratic, ~35% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.

How Gahanna compares

Among cities within 25 miles, Gahanna leans more Democratic than 89 of 99 neighbors.

Gahanna runs about 32 points more Democratic than Ohio as a whole. Ohio leans Republican overall, while Gahanna is one of the few Democratic-leaning pockets.

Politics vary noticeably by neighborhood within Gahanna. The north side is the most Democratic-leaning (D+32) and the east side is the least Democratic-leaning (D+10), a spread of about 22 points.

Why Gahanna leans the way it does

This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Gahanna, not a ranked or complete list of what matters most.

Dense areas vote Democratic. About 91% of residents in Gahanna live in densely developed areas, about 55 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Gahanna sits in the top quarter (about 51%, above 94% of cities). Gahanna runs against the grain of Ohio, a Democratic-leaning pocket in a Republican-leaning state.

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Gahanna, OH sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in Gahanna looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Gahanna is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 72%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Gahanna have completed high school, above 84% of cities. Learn more about the findings and methodology on the political spectrum map.

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.