Dundas is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 80% of adults in Dundas typically vote, above the U.S. average of about 62%. Among adults in Dundas, ~14% vote Democratic, ~65% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Dundas compares
Among cities within 25 miles, Dundas leans more Republican than 19 of 55 neighbors.
Dundas runs about 75 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Dundas is one of the few Republican-leaning pockets.
Why Dundas 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 Dundas, not a ranked or complete list of what matters most.
Dundas votes against the grain of Illinois. Illinois leans Democratic overall, while Dundas runs about 75 points more Republican.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Dundas, IL sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Dundas looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in Dundas have completed high school, about 7 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- West Liberty, IL R+70
- Olney, IL R+43
- Passport, IL R+67
- Wakefield, IL R+70
- Boos, IL R+70
- Ste. Marie, IL R+71
- Noble, IL R+63
- Claremont, IL R+32
- Landes, IL R+67
- Wendelin, IL R+70
Cities with Similar Populations
- Yawkey, WV R+67
- Losantville, IN R+57
- Mendoza, TX R+11
- Riverton, MN R+36
- Harviell, MO R+74
- Penney Farms, FL R+52
- Yatesville, GA R+66
- San Pierre, IN R+55
- Houck, AZ D+51
- St. Francis, SD D+63
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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.