Jackson leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 65% of adults in Jackson typically vote, near the U.S. average of about 62%. Among adults in Jackson, ~21% vote Democratic, ~44% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Jackson compares
Among cities within 25 miles, Jackson leans more Republican than 27 of 35 neighbors.
Jackson runs about 16 points more Republican than South Carolina as a whole.
Politics vary noticeably by neighborhood within Jackson. The west side is the most Republican-leaning (R+38) and the northeast side is the least Republican-leaning (R+14), a spread of about 24 points.
Why Jackson 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 Jackson, not a ranked or complete list of what matters most.
Jackson votes Republican even though it is densely developed (about 22%, about 14 points below the U.S. average of 36%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Jackson, SC sits above the national average on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Jackson looks the way it does
Turnout in Jackson sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Beech Island, SC R+15
- New Ellenton, SC R+21
- Warrenville, SC R+47
- McBean, GA R+33
- Gloverville, SC R+50
- Burnettown, SC R+33
- Langley, SC R+33
- Montmorenci, SC R+37
- Aiken, SC R+20
- Shell Bluff, GA R+20
Cities with Similar Populations
- Milford, IN R+60
- South Fulton, TN R+53
- Fort Mitchell, AL D+13
- Warrensburg, NY R+28
- Frazier Park, CA R+28
- Lake Ann, MI R+16
- Bourbon, MO R+61
- Saegertown, PA R+47
- Blue Ridge, TX R+63
- Galesville, WI R+23
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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.