Aviston leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 91% of adults in Aviston typically vote, above the U.S. average of about 62%. Among adults in Aviston, ~26% vote Democratic, ~65% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How Aviston compares
Among cities within 25 miles, Aviston leans more Republican than 30 of 73 neighbors.
Aviston runs about 52 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Aviston is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Aviston. The north side is the most Republican-leaning (R+48) and the south side is the least Republican-leaning (R+36), a spread of about 12 points.
Why Aviston 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 Aviston, not a ranked or complete list of what matters most.
Aviston votes against the grain of Illinois. Illinois leans Democratic overall, while Aviston runs about 52 points more Republican. Dense places usually vote Democratic, but Aviston runs against that pattern. A high family-household share predicts Republican voting, and about 78% of households in Aviston are family households, above 85% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Aviston, 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 Aviston looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in Aviston 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
- Trenton, IL R+39
- Breese, IL R+53
- Albers, IL R+58
- Germantown, IL R+54
- St. Rose, IL R+64
- New Baden, IL R+37
- Damiansville, IL R+55
- Summerfield, IL R+38
- Bartelso, IL R+61
- Beckemeyer, IL R+52
Cities with Similar Populations
- Perrysville, OH R+58
- Dakota City, NE R+40
- Valley Home, CA R+52
- Villa Grove, IL R+46
- New Florence, PA R+52
- Bourbon, IN R+54
- Rockford, OH R+70
- Belmond, IA R+35
- Hansen, ID R+65
- Mountainburg, AR R+64
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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.