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

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

Winfield leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.

 

About 85% of adults in Winfield typically vote, above the U.S. average of about 62%. Among adults in Winfield, ~45% vote Democratic, ~40% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.

How Winfield compares

Among cities within 25 miles, Winfield leans more Democratic than 79 of 172 neighbors.

Winfield runs about 5 points more Republican than Illinois as a whole.

Politics vary noticeably by neighborhood within Winfield. The southeast side runs the most Democratic (D+20) and the northwest side runs the most Republican (Even), a spread of about 21 points.

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

Dense areas vote Democratic. About 80% of residents in Winfield live in densely developed areas, about 44 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Winfield sits in the top quarter (about 53%, above 95% of cities).

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Winfield, IL sits in the top tenth 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 Winfield looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Winfield is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 73%, about 13 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.

All Local Stats

Home Services

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.