Mount Olive leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 72% of adults in Mount Olive typically vote, above the U.S. average of about 62%. Among adults in Mount Olive, ~22% vote Democratic, ~50% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Mount Olive compares
Among cities within 25 miles, Mount Olive leans more Republican than 23 of 84 neighbors.
Mount Olive runs about 50 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Mount Olive is one of the few Republican-leaning pockets.
Why Mount Olive 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 Mount Olive, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 89% of residents in Mount Olive drive to work alone, about 16 points above the U.S. average of 74%. Mount Olive runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Mount Olive, IL sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Mount Olive looks the way it does
Turnout in Mount Olive sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lake Ka-ho, IL R+51
- White City, IL R+45
- Sawyerville, IL R+44
- Eagarville, IL R+52
- Benld, IL R+37
- Staunton, IL R+35
- Mount Clare, IL R+46
- Walshville, IL R+54
- Gillespie, IL R+39
- Williamson, IL R+46
Cities with Similar Populations
- Portville, NY R+37
- Siletz, OR R+10
- Montour Falls, NY R+27
- Parker City, IN R+57
- Russell, PA R+46
- Forestville, NY R+37
- Allenhurst, GA D+11
- Mason City, IL R+43
- Machias, ME R+27
- Littlerock, CA R+10
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.