Round O leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 64% of adults in Round O typically vote, near the U.S. average of about 62%. Among adults in Round O, ~19% vote Democratic, ~45% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Round O compares
Among cities within 25 miles, Round O leans more Republican than 39 of 42 neighbors.
Round O runs about 23 points more Republican than South Carolina as a whole.
Politics vary noticeably by neighborhood within Round O. The northeast side is the most Republican-leaning (R+50) and the south side is the least Republican-leaning (R+20), a spread of about 30 points.
Why Round O 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 Round O, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 11% of adults in Round O hold a bachelor's degree, about 12 points below the South Carolina average of 23%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Round O, SC sits in the bottom quarter 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 Round O looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Round O 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 49%, about 9 points below the South Carolina average of 58%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Cottageville, SC R+49
- Canadys, SC R+33
- Walterboro, SC R+6
- Hendersonville, SC R+37
- Stokes, SC R+35
- Grover, SC R+15
- Ritter, SC D+21
- Givhans, SC R+34
- Dorchester, SC R+30
- Ridgeville, SC R+20
Cities with Similar Populations
- Hanover, OH R+58
- Ruby, SC R+54
- Sandy Hook, MS R+55
- South Sumter, SC D+74
- Waldo, FL R+30
- Cooleemee, NC R+45
- Fancy Gap, VA R+61
- Osceola, MO R+62
- Cronanville, TN R+11
- Fostoria, MI R+48
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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.