Henning is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 73% of adults in Henning typically vote, above the U.S. average of about 62%. Among adults in Henning, ~14% vote Democratic, ~59% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Henning compares
Among cities within 25 miles, Henning leans more Republican than 51 of 70 neighbors.
Henning runs about 72 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Henning is one of the few Republican-leaning pockets.
Why Henning 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 Henning, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Henning, about 97% of residents are non-Hispanic white, about 25 points above the U.S. average of 72%; about 13% of adults hold a bachelor's degree, about 13 points below the Illinois average of 27%. Henning runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Developed land and Republican lean
Places with a rural land-use pattern tend to lean Republican; Henning, IL sits below the national average on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Henning looks the way it does
Turnout in Henning 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
- Alvin, IL R+60
- Alvan, IL R+62
- Higginsville, IL R+59
- Rossville, IL R+53
- Potomac, IL R+56
- Bismarck, IL R+53
- Collison, IL R+56
- Newtown, IL R+58
Cities with Similar Populations
- Zoar, AL R+82
- Zion, SC D+13
- Welch, TX R+82
- Pleasant View, CO R+47
- Sumneytown, PA R+31
- Heffron, WI R+36
- Sweet Springs, WV R+64
- Glenville, MD R+36
- Promise City, IA R+58
- Cuba, KY R+67
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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.