Blackville leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 71% of adults in Blackville typically vote, above the U.S. average of about 62%. Among adults in Blackville, ~45% vote Democratic, ~26% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Blackville compares
Among cities within 25 miles, Blackville leans more Democratic than 37 of 41 neighbors.
Blackville runs about 46 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while Blackville is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Blackville. The west side runs the most Democratic (D+65) and the southeast side runs the most Republican (R+6), a spread of about 71 points.
Why Blackville 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 Blackville, not a ranked or complete list of what matters most.
Blackville votes against the grain of South Carolina. South Carolina leans Republican overall, while Blackville runs about 46 points more Democratic. A high never-married share predicts Democratic voting, and about 30% of adults in Blackville have never been married, above 76% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Blackville, SC sits above 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 Blackville looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Blackville is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 48%, about 11 points below the South Carolina average of 58%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hilda, SC R+60
- Elko, SC R+35
- Sweden, SC D+25
- Sato, SC D+48
- Denmark, SC D+52
- Barnwell, SC R+19
- Williston, SC R+16
- Springfield, SC D+12
- Norway, SC D+4
Cities with Similar Populations
- Nixon, TX R+34
- Waldoboro, ME R+19
- Suttons Bay, MI D+9
- Sumas, WA R+38
- Grantham, PA D+22
- Green Park, MO D+5
- Lakeview, MI R+42
- Jamesville, NC R+31
- Shiner, TX R+65
- Sandstone, MN R+31
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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.