McCormick County leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 75% of adults in McCormick County typically vote, above the U.S. average of about 62%. Among adults in McCormick County, ~35% vote Democratic, ~40% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How McCormick County compares
Among counties within 50 miles, McCormick County leans more Republican than 3 of 17 neighbors.
McCormick County runs about 13 points more Democratic than South Carolina as a whole.
Politics vary noticeably by city within McCormick County. The east side runs the most Democratic (D+28) and the southwest side runs the most Republican (R+51), a spread of about 79 points.
Why McCormick County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for McCormick County, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 86% of residents in McCormick County drive to work alone, about 12 points above the U.S. average of 74%.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; McCormick County, SC sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in McCormick County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. McCormick County 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 58%, below 58% of counties. Homeowners vote more often than renters, and about 87% of households in McCormick County own their home, compared to around 72% in nearby counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Lincoln County, GA R+37
- Greenwood County, SC R+18
- Edgefield County, SC R+23
- Abbeville County, SC R+39
- Columbia County, GA R+21
- Wilkes County, GA R+13
- McDuffie County, GA R+14
- Richmond County, GA D+41
- Saluda County, SC R+34
- Elbert County, GA R+35
Counties with Similar Populations
- Yellow Medicine County, MN R+47
- Benewah County, ID R+60
- Iron County, MO R+60
- Brown County, KS R+42
- Brewster County, TX R+12
- Greenlee County, AZ R+45
- Chattahoochee County, GA R+14
- Wilkes County, GA R+13
- Howard County, IA R+35
- Cheyenne County, NE R+58
All Local Stats
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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.