Seivern leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 64% of adults in Seivern typically vote, near the U.S. average of about 62%. Among adults in Seivern, ~23% vote Democratic, ~41% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Seivern compares
Among cities within 25 miles, Seivern leans more Republican than 17 of 45 neighbors.
Seivern runs about 11 points more Republican than South Carolina as a whole.
Politics vary noticeably by neighborhood within Seivern. The west side is the most split-leaning (R+79) and the east side is the least split-leaning (R+3), a spread of about 76 points.
Why Seivern 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 Seivern, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 76% of households in Seivern are family households, about 10 points above the U.S. average of 67%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Seivern, SC sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Seivern looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Seivern 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.
Nearby Cities
- Wagener, SC R+37
- Fairview Crossroads, SC R+64
- Steedman, SC R+64
- New Holland Crossroads, SC R+67
- Thor, SC R+65
- Perry, SC R+45
- Samaria, SC R+70
- Salley, SC R+23
- Pelion, SC R+65
- Kitchings Mill, SC R+50
Cities with Similar Populations
- South Towanda, PA R+58
- Vanceville, PA R+44
- Cobre, NV R+67
- Ross, WI R+13
- Chambers, NY R+39
- Sherrill, AR D+3
- Howe, NE R+53
- Mole Lake, WI R+25
- Lucky, LA R+64
- Wellington Heights, WV R+60
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.