Summit Lake leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 64% of adults in Summit Lake typically vote, near the U.S. average of about 62%. Among adults in Summit Lake, ~19% vote Democratic, ~45% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Summit Lake compares
Among cities within 25 miles, Summit Lake leans more Republican than 20 of 33 neighbors.
Summit Lake runs about 38 points more Republican than Wisconsin as a whole.
Why Summit Lake 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 Summit Lake, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. Summit Lake sits in the bottom quarter on density and about 96% of residents are non-Hispanic white, about 9 points above the Wisconsin average of 87%.
Population density and Republican lean
Places with low population density tend to lean Republican; Summit Lake, WI sits in the bottom quarter nationally on this measure.
Why turnout in Summit Lake looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Summit Lake 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 63%, above 58% of cities. Homeowners vote more often than renters, and about 94% of households in Summit Lake own their home, about 19 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 97% of adults in Summit Lake have completed high school, above 88% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Elcho, WI R+37
- Deerbrook, WI R+45
- Post Lake, WI R+32
- Pearson, WI R+37
- Pelican Lake, WI R+33
- Neva Corners, WI R+50
- Harrison, WI R+35
- Parrish, WI R+38
- Dudley, WI R+40
Cities with Similar Populations
- Hayden, AZ D+11
- Brisbin, PA R+61
- Quincy, MO R+68
- Huron, MO R+65
- Holland, MN R+63
- Islesboro, ME D+28
- Folsomdale, NY R+50
- Kinderhook, MI R+45
- Marysville, ID R+65
- Edwardsville, AL R+77
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Sources and methodology
Precinct-level voting records used to fit the model come from Wisconsin Elections Commission, 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.