Rock Bluff is a Democratic stronghold. About 75% of voters here vote Democratic and 25% Republican.
About 65% of adults in Rock Bluff typically vote, near the U.S. average of about 62%. Among adults in Rock Bluff, ~49% vote Democratic, ~16% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Rock Bluff compares
Among cities within 25 miles, Rock Bluff leans more Democratic than 34 of 37 neighbors.
Rock Bluff runs about 68 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while Rock Bluff is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Rock Bluff. The south side is the most Democratic-leaning (D+65) and the northeast side is the least Democratic-leaning (D+14), a spread of about 51 points.
Why Rock Bluff 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 Rock Bluff, not a ranked or complete list of what matters most.
Rock Bluff votes against the grain of South Carolina. South Carolina leans Republican overall, while Rock Bluff runs about 68 points more Democratic. A high never-married share predicts Democratic voting, and about 47% of adults in Rock Bluff have never been married, above 97% of cities.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Rock Bluff, SC sits above the national average on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Rock Bluff looks the way it does
Limited routine healthcare access lines up with lower turnout, and Rock Bluff sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Salters, SC D+41
- Millwood, SC D+14
- Kingstree, SC D+43
- Taft, SC D+43
- Lane, SC D+65
- Greeleyville, SC D+51
- Fowler, SC D+43
- Bloomingvale, SC D+9
- Suttons, SC D+14
- Cades, SC R+3
Cities with Similar Populations
- Keysville, MO R+65
- Jordan, MO R+68
- Mount Gaylor, AR R+52
- Waterlick, VA R+45
- Idalia, MO R+69
- Fort Thomas, AZ R+70
- Montpelier, MS R+10
- Ferdinand, ID R+71
- Fryburg, PA R+59
- Lynn, OH R+65
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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.