Franklin Grove leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 74% of adults in Franklin Grove typically vote, above the U.S. average of about 62%. Among adults in Franklin Grove, ~26% vote Democratic, ~48% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How Franklin Grove compares
Among cities within 25 miles, Franklin Grove leans more Republican than 16 of 68 neighbors.
Franklin Grove runs about 41 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Franklin Grove is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Franklin Grove. The southeast side is the most Republican-leaning (R+40) and the north side is the least Republican-leaning (R+27), a spread of about 13 points.
Why Franklin Grove 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 Franklin Grove, not a ranked or complete list of what matters most.
Franklin Grove votes against the grain of Illinois. Illinois leans Democratic overall, while Franklin Grove runs about 41 points more Republican.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; Franklin Grove, IL sits in the bottom quarter nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in Franklin Grove looks the way it does
Turnout in Franklin Grove sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Nachusa, IL R+36
- Kingdom, IL R+39
- Ashton, IL R+42
- Lee Center, IL R+39
- Eldena, IL R+36
- Grand Detour, IL R+34
- Amboy, IL R+29
- Dixon, IL R+13
- Binghampton, IL R+40
- Honey Creek, IL R+34
Cities with Similar Populations
- Cotopaxi, CO R+38
- Head of Westport, MA R+5
- Hector, MN R+54
- Poncha Springs, CO D+8
- Martville, NY R+39
- Ward, SC R+42
- Palatine Bridge, NY R+43
- Sedan, KS R+67
- Hatfield, AR R+64
- Lakeville, OH R+64
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.