Edisto Island leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 79% of adults in Edisto Island typically vote, above the U.S. average of about 62%. Among adults in Edisto Island, ~37% vote Democratic, ~42% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Edisto Island compares
Among cities within 25 miles, Edisto Island leans more Republican than 21 of 29 neighbors.
Edisto Island runs about 12 points more Democratic than South Carolina as a whole.
Politics vary noticeably by neighborhood within Edisto Island. The north side runs the most Democratic (D+8) and the south side runs the most Republican (R+27), a spread of about 36 points.
Why Edisto Island leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Edisto Island. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Edisto Island, SC sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Edisto Island looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Edisto Island 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 61%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Freedman, SC R+14
- Edisto Beach, SC R+40
- Rockville, SC D+5
- Rantowles, SC D+7
- Seabrook Island, SC R+8
- Wadmalaw Island, SC D+14
- Yonges Island, SC D+6
- Meggett, SC D+2
- Hollywood, SC Even
- Osborn, SC D+22
Cities with Similar Populations
- Tigerton, WI R+47
- Dixmont, ME R+34
- Agency, MO R+53
- Tundra, TX R+78
- Fillmore, NY R+46
- Bowerston, OH R+59
- Marcus, IA R+44
- Fullerton, NE R+57
- Tompkins, MI R+42
- Reedsville, OH R+63
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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.