Douglas County leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 72% of adults in Douglas County typically vote, above the U.S. average of about 62%. Among adults in Douglas County, ~19% vote Democratic, ~53% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Douglas County compares
Among counties within 50 miles, Douglas County leans more Republican than 6 of 13 neighbors.
Douglas County runs about 59 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Douglas County is one of the few Republican-leaning pockets.
Politics vary noticeably by city within Douglas County. The northwest side is the most Republican-leaning (R+64) and the north side is the least Republican-leaning (R+44), a spread of about 20 points.
Why Douglas 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 Douglas County, not a ranked or complete list of what matters most.
Douglas County votes against the grain of Illinois. Illinois leans Democratic overall, while Douglas County runs about 59 points more Republican. A high family-household share predicts Republican voting, and about 71% of households in Douglas County are family households, above 83% of counties.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; Douglas County, IL sits in the bottom quarter nationally on this measure.
Why turnout in Douglas County looks the way it does
Turnout in Douglas County sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Coles County, IL R+26
- Moultrie County, IL R+54
- Piatt County, IL R+35
- Champaign County, IL D+29
- Edgar County, IL R+50
- Cumberland County, IL R+60
- Macon County, IL R+8
- Shelby County, IL R+58
- Clark County, IL R+53
- Vermilion County, IL R+22
Counties with Similar Populations
- Pierce County, GA R+71
- Monroe County, AL R+23
- Vernon County, MO R+56
- Franklin Parish, LA R+38
- Wayne County, MS R+25
- Plumas County, CA R+23
- Tyler County, TX R+70
- Union County, TN R+70
- Lincoln County, MT R+50
- Spencer County, IN R+49
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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.