Madison leans Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 87% of adults in Madison typically vote, above the U.S. average of about 62%. Among adults in Madison, ~30% vote Democratic, ~57% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Madison compares
Among cities within 25 miles, Madison leans more Republican than 22 of 63 neighbors.
Madison runs about 18 points more Republican than Ohio as a whole.
Politics vary noticeably by neighborhood within Madison. The southeast side is the most Republican-leaning (R+42) and the northwest side is the least Republican-leaning (R+24), a spread of about 18 points.
Why Madison 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 Madison, not a ranked or complete list of what matters most.
Madison votes Republican even though it is densely developed (about 33%, above 82% of cities). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Madison, OH sits in the top quarter nationally on this measure.
Why turnout in Madison looks the way it does
Turnout in Madison 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.
Nearby Cities
- North Madison, OH R+24
- North Perry, OH R+36
- South Madison, OH R+42
- Perry, OH R+32
- Harpersfield, OH R+41
- Geneva, OH R+30
- Thompson, OH R+49
- Geneva-on-the-Lake, OH R+36
- Mechanicsville, OH R+38
Cities with Similar Populations
- Portland, IN R+53
- Avocado Heights, CA D+25
- Ingleside, TX R+45
- Katonah, NY D+10
- Hyrum, UT R+51
- Hawthorn Woods, IL D+3
- Lago Vista, TX R+15
- St. Amant, LA R+77
- Jordan, MN R+23
- Doraville, GA D+30
All Local Stats
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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.