Summerton, SC Political Map | Democrat & Republican Areas in Summerton

By the BestNeighborhood data science team. Last updated May 2026.

Summerton is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.

 

About 67% of adults in Summerton typically vote, near the U.S. average of about 62%. Among adults in Summerton, ~33% vote Democratic, ~34% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.

How Summerton compares

Among cities within 25 miles, Summerton sits roughly in the middle of the political spectrum, with 21 neighbors leaning further in the place's direction and 14 leaning the other way.

Summerton runs about 15 points more Democratic than South Carolina as a whole.

Politics vary noticeably by neighborhood within Summerton. The northwest side runs the most Democratic (D+59) and the southwest side runs the most Republican (R+40), a spread of about 99 points.

Why Summerton leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Summerton. The lean here lands roughly where demographic data alone would predict.

Walkability and Republican lean

Places with a low walkability score tend to lean Republican; Summerton, SC sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Summerton looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Summerton 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 59%, below 61% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.