Seco Mines leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 55% of adults in Seco Mines typically vote, below the U.S. average of about 62%. Among adults in Seco Mines, ~25% vote Democratic, ~30% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How Seco Mines compares
Among cities within 25 miles, Seco Mines leans more Republican than 1 of 7 neighbors.
Seco Mines runs about 7 points more Democratic than Texas as a whole.
Politics vary noticeably by neighborhood within Seco Mines. The north side is the most split-leaning (R+29) and the southwest side is the least split-leaning (R+3), a spread of about 27 points.
Why Seco Mines 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 Seco Mines, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 92% of residents in Seco Mines drive to work alone, about 18 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 75% of households in Seco Mines are family households, above 77% of cities.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Seco Mines, TX sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Seco Mines looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Seco Mines 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 40%, about 13 points below the Texas average of 54%. Renters vote less often than owners, and about 62% of households in Seco Mines rent, compared to around 24% in nearby cities. Low high-school completion lines up with lower turnout, and about 79% of adults in Seco Mines have completed high school, below 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Eagle Pass, TX R+8
- Eidson Road, TX R+3
- Normandy, TX R+23
- Quemado, TX R+31
- Spofford, TX R+33
- El Indio, TX R+13
- Fort Clark Springs, TX R+43
- Brackettville, TX R+24
- Winter Haven, TX D+7
Cities with Similar Populations
- Sierra Blanca, TX R+61
- Clarence, IA R+35
- Appleton City, MO R+57
- Marianna, PA R+47
- Millwood, NY D+9
- Crestone, CO D+36
- Glen Easton, WV R+62
- Walnut Creek, NC R+32
- Donahue, IA R+36
- St. Charles, IA R+43
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.