Nachusa leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 83% of adults in Nachusa typically vote, above the U.S. average of about 62%. Among adults in Nachusa, ~27% vote Democratic, ~56% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Nachusa compares
Among cities within 25 miles, Nachusa leans more Republican than 29 of 65 neighbors.
Nachusa runs about 47 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Nachusa is one of the few Republican-leaning pockets.
Why Nachusa 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 Nachusa, not a ranked or complete list of what matters most.
Nachusa votes against the grain of Illinois. Illinois leans Democratic overall, while Nachusa runs about 47 points more Republican. A high family-household share predicts Republican voting, and about 81% of households in Nachusa are family households, above 91% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Nachusa, IL sits above the national average 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 Nachusa looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in Nachusa have completed high school, about 6 points above the Illinois average of 92%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Franklin Grove, IL R+30
- Kingdom, IL R+39
- Dixon, IL R+13
- Grand Detour, IL R+34
- Eldena, IL R+36
- Prairieville, IL R+27
- Woosung, IL R+26
- Lee Center, IL R+39
- Ashton, IL R+42
- Amboy, IL R+29
Cities with Similar Populations
- Cowart, MS D+6
- Denali National Park, AK R+36
- Allendale, MO R+65
- Angola on the Lake, NY R+20
- Northampton, NY R+5
- Oakmulgee, AL R+41
- Shuler, AR R+62
- Cato, MO R+68
- Esmond, ND R+43
- Kurtz, MI R+42
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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.