Grand Tower is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 64% of adults in Grand Tower typically vote, near the U.S. average of about 62%. Among adults in Grand Tower, ~15% vote Democratic, ~50% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Grand Tower compares
Among cities within 25 miles, Grand Tower leans more Republican than 35 of 76 neighbors.
Grand Tower runs about 65 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Grand Tower is one of the few Republican-leaning pockets.
Why Grand Tower 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 Grand Tower, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 6% of adults in Grand Tower hold a bachelor's degree, about 21 points below the Illinois average of 27%. Rural areas vote Republican, and Grand Tower sits in the bottom quarter on density (about 5%, below 78% of cities). Grand Tower runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Population density, never-married share, and Republican lean
Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as Grand Tower, IL does.
Why turnout in Grand Tower looks the way it does
Turnout in Grand Tower 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
- Altenburg, MO R+74
- Frohna, MO R+74
- Gorham, IL R+50
- Sand Ridge, IL R+54
- New Wells, MO R+71
- Pomona, IL R+45
- Wolf Lake, IL R+55
- Jacob, IL R+52
Cities with Similar Populations
- Olmsted, IL R+54
- Mill City, PA R+38
- DeLand, IL R+43
- Rose Terrace, KY R+31
- Hiltonia, GA R+27
- Montgomery, KY R+50
- Lake Clear, NY D+21
- East Smithfield, PA R+60
- Tiosa, IN R+59
- Pickwick, MN R+23
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.