Alexander County is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 70% of adults in Alexander County typically vote, above the U.S. average of about 62%. Among adults in Alexander County, ~34% vote Democratic, ~36% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Alexander County compares
Among counties within 50 miles, Alexander County leans more Republican than 1 of 20 neighbors.
Alexander County runs about 15 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Alexander County is one of the few Republican-leaning pockets.
Politics vary noticeably by city within Alexander County. The southeast side runs the most Democratic (D+47) and the northwest side runs the most Republican (R+51), a spread of about 99 points.
Why Alexander County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Alexander County, not a ranked or complete list of what matters most.
Alexander County votes against the grain of Illinois. Illinois leans Democratic overall, while Alexander County runs about 15 points more Republican.
Population density and Republican lean
Places with low population density tend to lean Republican; Alexander County, IL sits below the national average on this measure.
Why turnout in Alexander County looks the way it does
Turnout in Alexander County sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Pulaski County, IL R+26
- Scott County, MO R+43
- Ballard County, KY R+62
- Mississippi County, MO R+35
- Union County, IL R+48
- Cape Girardeau County, MO R+34
- Carlisle County, KY R+69
- Johnson County, IL R+41
- Massac County, IL R+46
- McCracken County, KY R+30
Counties with Similar Populations
- Dewey County, SD D+30
- Martin County, TX R+68
- Brule County, SD R+52
- Aleutians West Census Area, AK Even
- Stevens County, KS R+73
- Delta County, TX R+68
- Warren County, GA D+15
- Polk County, NE R+62
- Coal County, OK R+68
- Carter County, MO R+71
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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.