Madison County is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 75% of adults in Madison County typically vote, above the U.S. average of about 62%. Among adults in Madison County, ~14% vote Democratic, ~61% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Madison County compares
Among counties within 50 miles, Madison County leans more Republican than 6 of 10 neighbors.
Madison County runs about 44 points more Republican than Missouri as a whole.
Politics vary noticeably by city within Madison County. The northwest side is the most Republican-leaning (R+71) and the north side is the least Republican-leaning (R+56), a spread of about 15 points.
Why Madison County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Madison County, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Madison County, about 92% of residents are non-Hispanic white, about 20 points above the U.S. average of 72%; about 16% of adults hold a bachelor's degree, about 6 points below the Missouri average of 22%. A high family-household share predicts Republican voting, and about 70% of households in Madison County are family households, above 81% of counties.
Local retail density and voter turnout
Places with dense local retail within a mile tend to turn out at a higher rate; Madison County, MO sits in the top tenth nationally on this measure. Nearby retail does not change how people vote; it reflects how urban and built-up a place is.
Why turnout in Madison County looks the way it does
Turnout in Madison County 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 Counties
- Bollinger County, MO R+70
- St. Francois County, MO R+48
- Iron County, MO R+60
- Perry County, MO R+62
- Ste. Genevieve County, MO R+55
- Wayne County, MO R+68
- Washington County, MO R+63
- Reynolds County, MO R+67
- Cape Girardeau County, MO R+34
- Randolph County, IL R+45
Counties with Similar Populations
- Caldwell County, KY R+56
- Chippewa County, MN R+36
- Choctaw County, AL R+22
- Bleckley County, GA R+42
- Lewis County, TN R+67
- Mississippi County, MO R+35
- Tallahatchie County, MS D+20
- Amite County, MS R+29
- Allen County, KS R+48
- Charlton County, GA R+46
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Sources and methodology
Precinct-level voting records used to fit the model come from Missouri 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.