Cayce leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 62% of adults in Cayce typically vote, near the U.S. average of about 62%. Among adults in Cayce, ~29% vote Democratic, ~33% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How Cayce compares
Among cities within 25 miles, Cayce leans more Republican than 25 of 51 neighbors.
Cayce runs about 12 points more Democratic than South Carolina as a whole.
Politics vary noticeably by neighborhood within Cayce. The northwest side runs the most Democratic (D+20) and the south side runs the most Republican (R+23), a spread of about 44 points.
Why Cayce 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 Cayce, not a ranked or complete list of what matters most.
Cayce votes Republican even though it is densely developed (about 76%, far above the South Carolina average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Cayce, SC sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Cayce looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Cayce 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 61%, modestly below similar-sized cities (around 67%). Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Springdale, SC R+30
- West Columbia, SC R+13
- Pine Ridge, SC R+34
- South Congaree, SC R+36
- St. Andrews, SC D+59
- Seven Oaks, SC D+12
- Forest Acres, SC D+10
- Columbia, SC D+6
- Independents, SC R+18
Cities with Similar Populations
- Franklin Park, PA D+7
- Keystone, FL R+27
- Bucyrus, OH R+47
- Bennington, NE R+18
- Princeton, MN R+42
- Lincoln, IL R+33
- Wynnewood, PA D+61
- Port Lavaca, TX R+29
- Frederick, CO R+21
- Ottawa, KS R+38
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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.