Harrison County leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 67% of adults in Harrison County typically vote, near the U.S. average of about 62%. Among adults in Harrison County, ~21% vote Democratic, ~46% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How Harrison County compares
Among counties within 50 miles, Harrison County leans more Republican than 4 of 11 neighbors.
Harrison County runs about 25 points more Republican than Texas as a whole.
Politics vary noticeably by city within Harrison County. The northwest side is the most Republican-leaning (R+68) and the north side is the least Republican-leaning (R+13), a spread of about 54 points.
Why Harrison 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 Harrison County, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 71% of households in Harrison County are family households, above 84% of counties.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Harrison County, TX sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Harrison County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Harrison County 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 Counties
- Marion County, TX R+49
- Gregg County, TX R+28
- Panola County, TX R+62
- Upshur County, TX R+67
- Rusk County, TX R+53
- Caddo Parish, LA D+18
- Cass County, TX R+56
- Morris County, TX R+39
- Bossier Parish, LA R+30
- Camp County, TX R+41
Counties with Similar Populations
- San Patricio County, TX R+31
- Wise County, TX R+69
- Franklin County, NC R+18
- Blue Earth County, MN R+6
- Greenwood County, SC R+18
- Klamath County, OR R+33
- Troup County, GA R+11
- Lake County, CA R+4
- Allegany County, MD R+33
- Shiawassee County, MI R+27
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Sources and methodology
Precinct-level voting records used to fit the model come from Texas Secretary of State, Elections Division, 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.