Symerton leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 78% of adults in Symerton typically vote, above the U.S. average of about 62%. Among adults in Symerton, ~20% vote Democratic, ~58% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Symerton compares
Among cities within 25 miles, Symerton leans more Republican than 69 of 85 neighbors.
Symerton runs about 58 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Symerton is one of the few Republican-leaning pockets.
Why Symerton 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 Symerton, not a ranked or complete list of what matters most.
Symerton votes against the grain of Illinois. Illinois leans Democratic overall, while Symerton runs about 58 points more Republican. A high family-household share predicts Republican voting, and about 83% of households in Symerton are family households, above 95% of cities.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Symerton, IL sits in the top tenth nationally on this measure.
Why turnout in Symerton looks the way it does
Homeowners vote more often than renters. About 97% of households in Symerton own their home, about 18 points above the Illinois average of 80%. High high-school completion lines up with higher turnout, and more than 99% of adults in Symerton have completed high school, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Wilmington, IL R+32
- Wilton Center, IL R+50
- Lakewood Shores, IL R+47
- Ritchie, IL R+48
- Elwood, IL R+30
- Manhattan, IL R+30
- Flickerville, IL R+43
- Braidwood, IL R+32
- Lorenzo, IL R+38
- Diamond, IL R+33
Cities with Similar Populations
- Lariat, TX R+74
- Oak Hill, TX R+55
- Niagara, PA R+41
- Dubois, GA R+47
- Dudleytown, IN R+64
- Coxburg, MS R+20
- Cornish Flat, NH Even
- Texhoma, TX R+87
- Hope, NJ R+32
- Douglas, ND R+53
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.