Marion County leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 71% of adults in Marion County typically vote, above the U.S. average of about 62%. Among adults in Marion County, ~18% vote Democratic, ~53% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Marion County compares
Among counties within 50 miles, Marion County leans more Republican than 9 of 13 neighbors.
Marion County runs about 35 points more Republican than Texas as a whole.
Politics vary noticeably by city within Marion County. The north side is the most Republican-leaning (R+62) and the southeast side is the least Republican-leaning (R+27), a spread of about 34 points.
Why Marion 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 Marion County, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 16% of adults in Marion County hold a bachelor's degree, about 10 points below the Texas average of 26%. Rural areas vote Republican, and Marion County sits in the bottom quarter on density (about 9%, below 85% of counties).
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Marion County, TX 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 Marion County looks the way it does
Limited routine healthcare access lines up with lower turnout, and Marion County sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Harrison County, TX R+39
- Cass County, TX R+56
- Morris County, TX R+39
- Gregg County, TX R+28
- Upshur County, TX R+67
- Camp County, TX R+41
- Titus County, TX R+40
- Caddo Parish, LA D+18
- Panola County, TX R+62
- Bowie County, TX R+29
Counties with Similar Populations
- Switzerland County, IN R+63
- Rock County, MN R+45
- Clarke County, IA R+41
- West Carroll Parish, LA R+70
- Wayne County, NE R+44
- McLean County, ND R+51
- Cumberland County, VA R+23
- Stevens County, MN R+37
- Zavala County, TX D+4
- Grand County, UT R+2
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.