Tega Cay leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 88% of adults in Tega Cay typically vote, above the U.S. average of about 62%. Among adults in Tega Cay, ~37% vote Democratic, ~51% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How Tega Cay compares
Among cities within 25 miles, Tega Cay leans more Republican than 15 of 65 neighbors.
Politically, Tega Cay sits close to the rest of South Carolina.
Politics vary noticeably by neighborhood within Tega Cay. The west side is the most Republican-leaning (R+22) and the northwest side is the least Republican-leaning (R+12), a spread of about 10 points.
Why Tega Cay 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 Tega Cay, not a ranked or complete list of what matters most.
Tega Cay votes Republican even though it is densely developed (about 69%, far above the South Carolina average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 86% of households in Tega Cay are family households, above 97% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Tega Cay, SC sits in the top tenth 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 Tega Cay looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Tega Cay 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 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 99% of adults in Tega Cay have completed high school, above 97% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Fort Mill, SC R+16
- Lake Wylie, SC R+24
- Rock Hill, SC Even
- Pineville, NC D+22
- Indian Land, SC R+20
- Springwood, NC R+30
- Dixie, NC D+7
- York, SC R+35
- Lesslie, SC R+47
- Clover, SC R+44
Cities with Similar Populations
- Ortonville, MI R+29
- Banta, CA R+12
- Hasbrouck Heights, NJ R+7
- Harrison, TN R+43
- Washington, NJ R+14
- Marshfield, MO R+59
- Patchogue, NY R+2
- Highland, NY D+8
- Rogers, MN R+9
- Shingle Springs, CA R+24
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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.