29146 leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 71% of adults in 29146 typically vote, above the U.S. average of about 62%. Among adults in 29146, ~40% vote Democratic, ~31% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 29146 compares
Among zip codes within 15 miles, 29146 leans more Democratic than 8 of 9 neighbors.
29146 runs about 29 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while 29146 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 29146. The southwest side runs the most Democratic (D+40) and the southeast side runs the most Republican (R+38), a spread of about 78 points.
Why 29146 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 29146, not a ranked or complete list of what matters most.
29146 votes against the grain of South Carolina. South Carolina leans Republican overall, while 29146 runs about 29 points more Democratic. A high never-married share predicts Democratic voting, and about 39% of adults in 29146 have never been married, above 86% of zip codes.
Population density and Republican lean
Places with low population density tend to lean Republican; 29146, SC sits below the national average on this measure.
Why turnout in 29146 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 29146 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 10 points below the South Carolina average of 58%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.