Holly Hill, SC Political Map | Democrat & Republican Areas in Holly Hill

By the BestNeighborhood data science team. Last updated May 2026.

Holly Hill leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.

 

About 73% of adults in Holly Hill typically vote, above the U.S. average of about 62%. Among adults in Holly Hill, ~49% vote Democratic, ~24% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.

How Holly Hill compares

Among cities within 25 miles, Holly Hill leans more Democratic than 34 of 36 neighbors.

Holly Hill runs about 51 points more Democratic than South Carolina as a whole. South Carolina leans Republican overall, while Holly Hill is one of the few Democratic-leaning pockets.

Politics vary noticeably by neighborhood within Holly Hill. The east side runs the most Democratic (D+55) and the west side runs the most Republican (R+8), a spread of about 63 points.

Why Holly Hill 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 Holly Hill, not a ranked or complete list of what matters most.

Holly Hill votes against the grain of South Carolina. South Carolina leans Republican overall, while Holly Hill runs about 51 points more Democratic. A high never-married share predicts Democratic voting, and about 36% of adults in Holly Hill have never been married, above 88% of cities.

Preventive-care access and voter turnout

Places with limited routine preventive-care access tend to turn out at a lower rate; Holly Hill, SC sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in Holly Hill looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Holly Hill is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.

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.