Woodridge leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 72% of adults in Woodridge typically vote, above the U.S. average of about 62%. Among adults in Woodridge, ~42% vote Democratic, ~30% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Woodridge compares
Among cities within 25 miles, Woodridge leans more Democratic than 111 of 162 neighbors.
Woodridge runs about 7 points more Democratic than Illinois as a whole.
Politics vary noticeably by neighborhood within Woodridge. The southwest side runs the most Democratic (D+27) and the southeast side runs the most Republican (R+3), a spread of about 31 points.
Why Woodridge 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 Woodridge, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 93% of residents in Woodridge live in densely developed areas, about 57 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Woodridge sits in the top quarter (about 49%, above 93% of cities). A high never-married share predicts Democratic voting, and about 33% of adults in Woodridge have never been married, above 84% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Woodridge, IL sits in the top tenth nationally on this measure.
Why turnout in Woodridge looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Woodridge 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 69%, about 9 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Downers Grove, IL D+17
- Darien, IL D+3
- Lisle, IL D+21
- Bolingbrook, IL D+29
- Westmont, IL D+16
- Willowbrook, IL D+5
- Clarendon Hills, IL D+14
- Hinsdale, IL D+12
- Naperville, IL D+21
- Burr Ridge, IL R+3
Cities with Similar Populations
- Kendall West, FL R+34
- Mission Bend, TX D+23
- Clinton, MD D+79
- Wildomar, CA R+22
- Lockport, NY R+10
- Alamogordo, NM R+23
- Miamisburg, OH R+20
- Richfield, MN D+41
- Lincolnton, NC R+45
- Westchester, FL R+42
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.