Scott Air Force Base leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 77% of adults in Scott Air Force Base typically vote, above the U.S. average of about 62%. Among adults in Scott Air Force Base, ~35% vote Democratic, ~42% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Scott Air Force Base compares
Among cities within 25 miles, Scott Air Force Base leans more Republican than 29 of 93 neighbors.
Scott Air Force Base runs about 22 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Scott Air Force Base is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Scott Air Force Base. The south side runs the most Democratic (Even) and the southeast side runs the most Republican (R+28), a spread of about 29 points.
Why Scott Air Force Base 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 Scott Air Force Base, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 86% of residents in Scott Air Force Base drive to work alone, about 13 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 97% of households in Scott Air Force Base are family households, in the top fraction of cities. Scott Air Force Base runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Scott Air Force Base, IL sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Scott Air Force Base looks the way it does
Areas with high high-school completion turn out at higher rates. More than 99% of adults in Scott Air Force Base have completed high school, about 7 points above the Illinois average of 92%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Scott AFB, IL Even
- Mascoutah, IL R+25
- Shiloh, IL D+15
- Lebanon, IL R+13
- O'Fallon, IL D+8
- Summerfield, IL R+38
- Freeburg, IL R+36
- Swansea, IL D+10
- New Baden, IL R+37
- Belleville, IL D+19
Cities with Similar Populations
- Chaumont, NY R+20
- Terre Hill, PA R+47
- Warren Park, IN D+36
- Maynard, AR R+70
- Ten Mile, MS R+66
- Laflin, PA R+11
- Granton, WI R+43
- Wetmore, MI R+25
- Pine Hill, AL D+12
- Loganville, PA R+20
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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.