Lake Summerset leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 82% of adults in Lake Summerset typically vote, above the U.S. average of about 62%. Among adults in Lake Summerset, ~25% vote Democratic, ~57% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How Lake Summerset compares
Among cities within 25 miles, Lake Summerset leans more Republican than 43 of 61 neighbors.
Lake Summerset runs about 51 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Lake Summerset is one of the few Republican-leaning pockets.
Why Lake Summerset 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 Lake Summerset, not a ranked or complete list of what matters most.
Lake Summerset votes against the grain of Illinois. Illinois leans Democratic overall, while Lake Summerset runs about 51 points more Republican.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Lake Summerset, IL sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Lake Summerset looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Lake Summerset is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 68%, about 8 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Davis, IL R+29
- Oakley, WI R+33
- Durand, IL R+35
- Rock Grove, IL R+44
- Rock City, IL R+42
- Twin Grove, WI R+36
- Juda, WI R+34
- Brodhead, WI R+23
- Dakota, IL R+44
- Newark, WI R+32
Cities with Similar Populations
- Norcatur, KS R+75
- Corona, NM R+54
- Scottville, IL R+56
- Coyote, NM D+22
- Hartline, WA R+53
- Lavaca, AL Even
- Vinland, KS R+20
- Waterlily, NC R+51
- Bond, LA R+68
- Old Hundred, NC R+19
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.