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

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

Chester leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.

 

About 63% of adults in Chester typically vote, near the U.S. average of about 62%. Among adults in Chester, ~34% vote Democratic, ~30% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.

How Chester compares

Among cities within 25 miles, Chester leans more Democratic than 49 of 58 neighbors.

Chester runs about 23 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while Chester is one of the few Democratic-leaning pockets.

Politics vary noticeably by neighborhood within Chester. The north side runs the most Democratic (D+35) and the northwest side runs the most Republican (R+38), a spread of about 73 points.

Why Chester 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 Chester, not a ranked or complete list of what matters most.

Density combined with diversity predicts Democratic voting. Non-Hispanic white share in Chester is about 51%, about 21 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 35% of adults in Chester have never been married, above 87% of cities. Chester runs against the grain of South Carolina, a Democratic-leaning pocket in a Republican-leaning state.

Paved land cover and Democratic lean

Places with extensive paved surfaces tend to lean Democratic; Chester, SC sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.

Why turnout in Chester looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Chester is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. 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.