Colfax leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 91% of adults in Colfax typically vote, above the U.S. average of about 62%. Among adults in Colfax, ~29% vote Democratic, ~62% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How Colfax compares
Among cities within 25 miles, Colfax leans more Republican than 10 of 56 neighbors.
Colfax runs about 47 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Colfax is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Colfax. The southwest side is the most Republican-leaning (R+52) and the east side is the least Republican-leaning (R+33), a spread of about 19 points.
Why Colfax 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 Colfax, not a ranked or complete list of what matters most.
Colfax votes against the grain of Illinois. Illinois leans Democratic overall, while Colfax runs about 47 points more Republican. Dense places usually vote Democratic, but Colfax runs against that pattern.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; Colfax, IL sits in the top quarter nationally on this measure.
Why turnout in Colfax looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in Colfax 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
- Anchor, IL R+52
- Cooksville, IL R+51
- Cropsey, IL R+56
- Arrowsmith, IL R+45
- Ellsworth, IL R+45
- Saybrook, IL R+46
- Lexington, IL R+40
- Weston, IL R+52
- Padua, IL R+40
- Garber, IL R+57
Cities with Similar Populations
- Sulphur Springs, AR R+62
- Kings Mountain, KY R+74
- Greenview, TX R+74
- Welcome, MD R+33
- Goldvein, VA R+39
- Jerusalem, GA R+69
- Turin, GA R+46
- Odell, IL R+38
- Palisades, NY D+7
- Sigel, IL R+70
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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.