Allendale is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 65% of adults in Allendale typically vote, near the U.S. average of about 62%. Among adults in Allendale, ~11% vote Democratic, ~54% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Allendale compares
Among cities within 25 miles, Allendale leans more Republican than 52 of 67 neighbors.
Allendale runs about 76 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Allendale is one of the few Republican-leaning pockets.
Why Allendale 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 Allendale, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 88% of residents in Allendale drive to work alone, about 14 points above the U.S. average of 74%. Allendale runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Allendale, IL sits in the top quarter nationally on this measure.
Why turnout in Allendale looks the way it does
Homeowners vote more often than renters. About 92% of households in Allendale own their home, about 13 points above the Illinois average of 80%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Patton, IL R+65
- Sand Barrens, IL R+67
- St. Francisville, IL R+62
- Friendsville, IL R+71
- Odgen, IL R+66
- Mount Carmel, IL R+45
- East Mount Carmel, IN R+58
- Helena, IL R+70
- Decker, IN R+62
- Lancaster, IL R+50
Cities with Similar Populations
- Charlotte, AR R+69
- Hughesville, NJ R+29
- Hallsville, OH R+61
- Vaughn, AL R+64
- Leonardville, KS R+58
- Hollow Creek, KY R+8
- Mount Vernon, SD R+67
- Sandy, FL R+70
- Norwood, LA R+12
- Newcomb, TN R+71
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.