St. Louis leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 79% of adults in St. Louis typically vote, above the U.S. average of about 62%. Among adults in St. Louis, ~32% vote Democratic, ~47% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How St. Louis compares
Among cities within 25 miles, St. Louis leans more Republican than 3 of 59 neighbors.
St. Louis runs about 16 points more Republican than Michigan as a whole.
Politics vary noticeably by neighborhood within St. Louis. The east side runs the most Democratic (D+9) and the northeast side runs the most Republican (R+46), a spread of about 55 points.
Why St. Louis 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 St. Louis, not a ranked or complete list of what matters most.
St. Louis votes Republican even though it is densely developed (about 55%, well above the Michigan average of 31%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Low college attainment predicts Republican voting, and St. Louis sits in the bottom quarter (about 14%, below 82% of cities).
Park access and Republican lean
Places with low park coverage tend to lean Republican; St. Louis, MI sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in St. Louis looks the way it does
Turnout in St. Louis 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
- Alma, MI R+14
- North Star, MI R+43
- Breckenridge, MI R+40
- Elwell, MI R+49
- Wheeler, MI R+47
- Ithaca, MI R+36
- Shepherd, MI R+22
- Rathbone, MI R+51
- Strickland, MI R+49
- Riverdale, MI R+49
Cities with Similar Populations
- Mount Pleasant, IA R+24
- Briarcliff Manor, NY D+21
- Decorah, IA D+4
- Cottage Grove, WI D+22
- Harrison, MI R+40
- Russell Springs, KY R+68
- South Park Township, PA R+10
- Spring City, PA D+7
- Hampshire, IL R+19
- Batesville, IN R+51
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Michigan Department 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.