New Grand Chain is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 67% of adults in New Grand Chain typically vote, near the U.S. average of about 62%. Among adults in New Grand Chain, ~13% vote Democratic, ~54% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How New Grand Chain compares
Among cities within 25 miles, New Grand Chain leans more Republican than 69 of 81 neighbors.
New Grand Chain runs about 73 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while New Grand Chain is one of the few Republican-leaning pockets.
Why New Grand Chain 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 Grand Chain, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 9% of adults in New Grand Chain hold a bachelor's degree, about 17 points below the Illinois average of 27%. Rural areas vote Republican, and New Grand Chain sits in the bottom quarter on density (about 5%, below 75% of cities). New Grand Chain runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Republican lean
Places with low population density tend to lean Republican; New Grand Chain, IL sits in the bottom quarter nationally on this measure.
Why turnout in New Grand Chain looks the way it does
Turnout in New Grand Chain sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Grand Chain, IL R+61
- Karnak, IL R+62
- Olmsted, IL R+54
- Perks, IL R+59
- Hillerman, IL R+59
- Cypress, IL R+59
- Oscar, KY R+61
- Bandana, KY R+61
- Ullin, IL R+33
Cities with Similar Populations
- Seven Springs, MS R+41
- Hatcher, KY R+59
- Silver Creek, WI R+44
- Bremen, KS R+63
- Coalville, NC R+61
- Longwoods, MD R+17
- Shawver Mill, VA R+65
- Grandin, ND R+42
- Olds, IA R+46
- Oldham, SD R+47
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.