Summit is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 72% of adults in Summit typically vote, above the U.S. average of about 62%. Among adults in Summit, ~12% vote Democratic, ~60% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Summit compares
Among cities within 25 miles, Summit leans more Republican than 48 of 50 neighbors.
Summit runs about 48 points more Republican than South Carolina as a whole.
Why Summit 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, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 11% of adults in Summit hold a bachelor's degree, about 13 points below the South Carolina average of 23%. Dense places usually vote Democratic, but Summit runs against that pattern. A high family-household share predicts Republican voting, and about 75% of households in Summit are family households, above 76% of cities.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Summit, SC sits in the bottom tenth 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 Summit looks the way it does
Limited routine healthcare access lines up with lower turnout, and Summit sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Leesville, SC R+61
- Gilbert, SC R+61
- Kneece, SC R+39
- Batesburg-Leesville, SC R+11
- Batesburg, SC R+58
- Samaria, SC R+70
- Steedman, SC R+64
- Lexington, SC R+36
- Fairview Crossroads, SC R+64
- Red Bank, SC R+43
Cities with Similar Populations
- Low Hampton, NY R+43
- Fence Lake, NM R+29
- East Boxford, MA D+5
- Forest Junction, WI R+50
- Bristol, SD R+40
- Monches, WI R+41
- Risco, MO R+74
- North Victory, NY R+37
- Paisley, OR R+71
- Elizaville, IN R+53
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from South Carolina State Election 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.