Alto Pass leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 75% of adults in Alto Pass typically vote, above the U.S. average of about 62%. Among adults in Alto Pass, ~19% vote Democratic, ~56% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Alto Pass compares
Among cities within 25 miles, Alto Pass leans more Republican than 27 of 74 neighbors.
Alto Pass runs about 61 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Alto Pass is one of the few Republican-leaning pockets.
Why Alto Pass 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 Alto Pass, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 89% of residents in Alto Pass drive to work alone, about 15 points above the U.S. average of 74%. Alto Pass runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Alto Pass, IL sits below the national average on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Alto Pass looks the way it does
Homeowners vote more often than renters. About 90% of households in Alto Pass own their home, about 11 points above the Illinois average of 80%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Pomona, IL R+45
- Mountain Glen, IL R+50
- Cobden, IL R+43
- Wolf Lake, IL R+55
- Makanda, IL D+6
- Ware, IL R+56
- Water Valley, IL R+44
- Jonesboro, IL R+48
- Grand Tower, IL R+54
- Anna, IL R+45
Cities with Similar Populations
- Adams, OR R+50
- Gardenville, MI R+23
- New Edinburg, AR R+63
- Nezperce, ID R+65
- Lardintown, PA R+44
- Twin, AL R+80
- Custer City, OK R+75
- Lahmansville, WV R+79
- North Palermo, ME R+26
- South Northfield, VT D+6
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.