Mascoutah, IL Political Map | Democrat & Republican Areas in Mascoutah

By the BestNeighborhood data science team. Last updated May 2026.

Mascoutah leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.

 

About 74% of adults in Mascoutah typically vote, above the U.S. average of about 62%. Among adults in Mascoutah, ~27% vote Democratic, ~47% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.

How Mascoutah compares

Among cities within 25 miles, Mascoutah leans more Republican than 30 of 88 neighbors.

Mascoutah runs about 36 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Mascoutah is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Mascoutah. The southwest side is the most Republican-leaning (R+41) and the west side is the least Republican-leaning (R+19), a spread of about 23 points.

Why Mascoutah 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 Mascoutah, not a ranked or complete list of what matters most.

Mascoutah votes Republican even though it is densely developed (about 43%, modestly above the Illinois average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Mascoutah runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.

High-school completion, uninsured rate, and voter turnout

Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Mascoutah, IL does.

Why turnout in Mascoutah looks the way it does

Areas with high high-school completion turn out at higher rates. About 96% of adults in Mascoutah have completed high school, about 7 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.

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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.