Shelby County is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 62% of adults in Shelby County typically vote, near the U.S. average of about 62%. Among adults in Shelby County, ~14% vote Democratic, ~48% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How Shelby County compares
Among counties within 50 miles, Shelby County leans more Republican than 6 of 9 neighbors.
Shelby County runs about 41 points more Republican than Texas as a whole.
Politics vary noticeably by city within Shelby County. The southwest side is the most Republican-leaning (R+84) and the south side is the least Republican-leaning (R+48), a spread of about 36 points.
Why Shelby 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 Shelby County, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 15% of adults in Shelby County hold a bachelor's degree, about 10 points below the Texas average of 26%. Car-dependent areas vote Republican, and about 82% of residents in Shelby County drive to work alone, above 83% of counties. A high family-household share predicts Republican voting, and about 73% of households in Shelby County are family households, above 90% of counties.
Population density and Republican lean
Places with low population density tend to lean Republican; Shelby County, TX sits in the bottom quarter nationally on this measure.
Why turnout in Shelby County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Shelby 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 47%, about 6 points below the Texas average of 54%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Panola County, TX R+62
- San Augustine County, TX R+47
- Nacogdoches County, TX R+29
- De Soto Parish, LA R+22
- Sabine County, TX R+72
- Sabine Parish, LA R+55
- Rusk County, TX R+53
- Angelina County, TX R+41
- Caddo Parish, LA D+18
- Harrison County, TX R+39
Counties with Similar Populations
- Hood River County, OR D+24
- Bell County, KY R+62
- Dawson County, NE R+35
- Fairfax City, VA D+25
- Itawamba County, MS R+76
- Anderson County, KY R+50
- Aransas County, TX R+46
- Upshur County, WV R+55
- Jerome County, ID R+48
- Ohio County, KY R+63
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.