Cissna Park is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 64% of adults in Cissna Park typically vote, near the U.S. average of about 62%. Among adults in Cissna Park, ~12% vote Democratic, ~53% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Cissna Park compares
Among cities within 25 miles, Cissna Park leans more Republican than 52 of 56 neighbors.
Cissna Park runs about 74 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Cissna Park is one of the few Republican-leaning pockets.
Why Cissna Park 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 Cissna Park, not a ranked or complete list of what matters most.
Cissna Park votes against the grain of Illinois. Illinois leans Democratic overall, while Cissna Park runs about 74 points more Republican.
Population density and Republican lean
Places with low population density tend to lean Republican; Cissna Park, IL sits below the national average on this measure.
Why turnout in Cissna Park looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in Cissna Park have completed high school, about 6 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Claytonville, IL R+67
- Woodworth, IL R+67
- Buckley, IL R+53
- Rankin, IL R+59
- Clarence, IL R+60
- East Lynn, IL R+63
- Schwer, IL R+68
- Loda, IL R+51
- Wellington, IL R+62
- Milford, IL R+57
Cities with Similar Populations
- Hope, MS D+9
- Roxie, MS R+3
- Oakford, IN R+51
- Country Club Hills, MO D+80
- Cascade, VA R+33
- Mountain Rest, SC R+55
- Mount Hamilton, CA D+10
- East View, KY R+65
- Bingham Canyon, UT R+13
- Taska, MS R+32
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.