Harmon leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 73% of adults in Harmon typically vote, above the U.S. average of about 62%. Among adults in Harmon, ~26% vote Democratic, ~47% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Harmon compares
Among cities within 25 miles, Harmon leans more Republican than 9 of 58 neighbors.
Harmon runs about 39 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Harmon is one of the few Republican-leaning pockets.
Why Harmon 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 Harmon, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 5% of residents in Harmon live in densely developed areas, about 27 points below the Illinois average of 33%. Harmon runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Republican lean
Places with low population density tend to lean Republican; Harmon, IL sits in the bottom quarter nationally on this measure.
Why turnout in Harmon looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in Harmon have completed high school, about 7 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Yeoward Addition, IL R+39
- Walton, IL R+30
- Deer Grove, IL R+40
- Nelson, IL R+23
- Rock Falls, IL R+16
- Eldena, IL R+36
- Walnut, IL R+44
- Prairieville, IL R+27
- Maytown, IL R+38
- Sterling, IL R+5
Cities with Similar Populations
- Alberta, MN R+46
- Wanship, UT R+4
- Orange, MO R+69
- Winterboro, AL R+7
- Henry, SD R+58
- Topton, NC R+52
- Hahnstown, PA R+43
- Monson, CA R+46
- Mineral, IL R+43
- Carlisle, MS Even
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.