West Dundee leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 79% of adults in West Dundee typically vote, above the U.S. average of about 62%. Among adults in West Dundee, ~43% vote Democratic, ~35% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How West Dundee compares
Among cities within 25 miles, West Dundee leans more Democratic than 99 of 149 neighbors.
Politically, West Dundee sits close to the rest of Illinois.
Politics vary noticeably by neighborhood within West Dundee. The southeast side is the most Democratic-leaning (D+20) and the northwest side is the least Democratic-leaning (D+3), a spread of about 17 points.
Why West Dundee 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 West Dundee, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 79% of residents in West Dundee live in densely developed areas, about 43 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and West Dundee sits in the top quarter (about 52%, above 94% of cities). A high never-married share predicts Democratic voting, and about 33% of adults in West Dundee have never been married, above 83% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; West Dundee, IL sits in the top quarter 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 West Dundee looks the way it does
Areas with strong routine healthcare access turn out at higher rates. West Dundee 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 70%, about 10 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Sleepy Hollow, IL D+5
- Dundee, IL Even
- East Dundee, IL D+6
- Carpentersville, IL D+17
- Gilberts, IL Even
- Elgin, IL D+18
- Algonquin, IL Even
- Barrington Hills, IL Even
- South Barrington, IL R+7
- Starks, IL R+19
Cities with Similar Populations
- Gate City, VA R+66
- Hull, GA R+35
- Georgetown, OH R+56
- Neptune Beach, FL R+14
- Inverness Highlands South, FL R+46
- Prosperity, SC R+46
- Moneta, VA R+48
- Bridge City, LA D+22
- Citrus Hills, FL R+34
- Le Roy, NY R+25
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.