Garden Plain leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 74% of adults in Garden Plain typically vote, above the U.S. average of about 62%. Among adults in Garden Plain, ~21% vote Democratic, ~53% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How Garden Plain compares
Among cities within 25 miles, Garden Plain leans more Republican than 49 of 68 neighbors.
Garden Plain runs about 54 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Garden Plain is one of the few Republican-leaning pockets.
Why Garden Plain 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 Garden Plain, not a ranked or complete list of what matters most.
Garden Plain votes against the grain of Illinois. Illinois leans Democratic overall, while Garden Plain runs about 54 points more Republican. A high family-household share predicts Republican voting, and about 81% of households in Garden Plain are family households, above 91% of cities.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Garden Plain, IL sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Garden Plain looks the way it does
Homeowners vote more often than renters. About 95% of households in Garden Plain own their home, about 15 points above the Illinois average of 80%. High high-school completion lines up with higher turnout, and about 96% of adults in Garden Plain have completed high school, above 84% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Fulton, IL R+27
- Albany, IL R+37
- Clinton, IA R+8
- Camanche, IA R+33
- Fenton, IL R+50
- Union Grove, IL R+37
- Lyons, IA R+39
- Shaffton, IA R+34
- Morrison, IL R+31
- Sixmile, IA R+45
Cities with Similar Populations
- Woody, CA R+52
- Edgewater Park, OK R+58
- Rushing, AR R+63
- Brandon, MO R+68
- Tollette, AR D+8
- Ridgeville, PA R+37
- Vining, IA R+45
- Jefferson Estates, OH R+56
- Walker, KS R+69
- Ivy Log, GA R+58
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Illinois State Board of 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.