San Augustine County leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 66% of adults in San Augustine County typically vote, near the U.S. average of about 62%. Among adults in San Augustine County, ~17% vote Democratic, ~49% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How San Augustine County compares
Among counties within 50 miles, San Augustine County leans more Republican than 2 of 6 neighbors.
San Augustine County runs about 33 points more Republican than Texas as a whole.
Politics vary noticeably by city within San Augustine County. The north side runs the most Democratic (D+22) and the southwest side runs the most Republican (R+80), a spread of about 102 points.
Why San Augustine 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 San Augustine County, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 13% of adults in San Augustine County hold a bachelor's degree, about 12 points below the Texas average of 26%. Rural areas vote Republican, and San Augustine County sits in the bottom quarter on density (about 10%, below 83% of counties). A high family-household share predicts Republican voting, and about 74% of households in San Augustine County are family households, above 94% of counties.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; San Augustine 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 San Augustine County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. San Augustine County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 45%, about 8 points below the Texas average of 54%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Sabine County, TX R+72
- Shelby County, TX R+54
- Nacogdoches County, TX R+29
- Angelina County, TX R+41
- Sabine Parish, LA R+55
- Jasper County, TX R+54
- Tyler County, TX R+70
- Panola County, TX R+62
- De Soto Parish, LA R+22
- Newton County, TX R+61
Counties with Similar Populations
- Thomas County, KS R+67
- Power County, ID R+46
- Richardson County, NE R+55
- Pocahontas County, WV R+55
- Liberty County, FL R+45
- Lemhi County, ID R+61
- Hamilton County, IL R+62
- Traill County, ND R+37
- Anderson County, KS R+58
- Searcy County, AR R+68
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.