Hollis leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 84% of adults in Hollis typically vote, above the U.S. average of about 62%. Among adults in Hollis, ~25% vote Democratic, ~59% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Hollis compares
Among cities within 25 miles, Hollis leans more Republican than 48 of 82 neighbors.
Hollis runs about 51 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Hollis is one of the few Republican-leaning pockets.
Why Hollis 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 Hollis, not a ranked or complete list of what matters most.
Hollis votes against the grain of Illinois. Illinois leans Democratic overall, while Hollis runs about 51 points more Republican. Car-dependent areas vote Republican, and about 86% of residents in Hollis drive to work alone, above 85% of cities. A high family-household share predicts Republican voting, and about 78% of households in Hollis are family households, above 86% of cities.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Hollis, IL sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Hollis looks the way it does
Homeowners vote more often than renters. About 92% of households in Hollis own their home, about 13 points above the Illinois average of 80%. High high-school completion lines up with higher turnout, and about 98% of adults in Hollis have completed high school, above 96% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- North Pekin, IL R+31
- Mapleton, IL R+35
- Bartonville, IL R+16
- Pekin, IL R+25
- Marquette Heights, IL R+31
- Creve Coeur, IL R+25
- Kingston Mines, IL R+46
- Bellevue, IL R+14
- Towne Oaks, IL R+38
Cities with Similar Populations
- Metasville, GA R+49
- Merrillsville, NY R+34
- Tyee, OR R+31
- Devils Tower, WY R+76
- New Hope, NY R+32
- Stotts Crossroads, NC R+51
- New Harmony, MS R+74
- East Ararat, PA R+41
- East Hickory, PA R+46
- Rockland, DE D+22
All Local Stats
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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.