New Haven is a Republican stronghold. About 22% of voters here vote Democratic and 78% Republican.
About 69% of adults in New Haven typically vote, above the U.S. average of about 62%. Among adults in New Haven, ~15% vote Democratic, ~54% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How New Haven compares
Among cities within 25 miles, New Haven leans more Republican than 21 of 65 neighbors.
New Haven runs about 67 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while New Haven is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within New Haven. The northwest side is the most Republican-leaning (R+68) and the east side is the least Republican-leaning (R+53), a spread of about 15 points.
Why New Haven 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 New Haven, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 5% of residents in New Haven live in densely developed areas, about 28 points below the Illinois average of 33%. A high white share with below-average college attainment predicts Republican voting, and New Haven fits that profile on both counts. New Haven runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Park access and Republican lean
Places with low park coverage tend to lean Republican; New Haven, IL sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in New Haven looks the way it does
Turnout in New Haven sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Emma, IL R+68
- Omaha, IL R+64
- Elba, IL R+66
- Hovey, IN R+54
- Maunie, IL R+68
- Ridgway, IL R+54
- Upton, IN R+53
- Norris City, IL R+62
- Herald, IL R+56
Cities with Similar Populations
- Tennyson, WI R+37
- Troy, SC R+18
- West Townshend, VT D+17
- Ubet, WI R+31
- Gilt Edge, TN R+77
- Macune, TX R+64
- Klagetoh, AZ D+55
- Bowie, AZ R+58
- Cottage Grove, TN R+71
- Lynn, AR R+73
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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.