Rio Medina leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 85% of adults in Rio Medina typically vote, above the U.S. average of about 62%. Among adults in Rio Medina, ~27% vote Democratic, ~58% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How Rio Medina compares
Among cities within 25 miles, Rio Medina leans more Republican than 23 of 35 neighbors.
Rio Medina runs about 21 points more Republican than Texas as a whole.
Politics vary noticeably by neighborhood within Rio Medina. The west side is the most Republican-leaning (R+62) and the east side is the least Republican-leaning (R+20), a spread of about 42 points.
Why Rio Medina 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 Rio Medina, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 81% of households in Rio Medina are family households, about 14 points above the U.S. average of 67%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Rio Medina, TX sits above the national average 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 Rio Medina looks the way it does
Homeowners vote more often than renters. About 92% of households in Rio Medina own their home, about 17 points above the Texas average of 75%. Limited routine healthcare access lines up with lower turnout, and Rio Medina sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Mico, TX R+58
- Castroville, TX R+33
- Lakehills, TX R+56
- Quihi, TX R+63
- San Geronimo, TX R+32
- Helotes, TX R+8
- Lake Medina Shores, TX R+49
- Lacoste, TX R+26
- Grey Forest, TX R+20
- Macdona, TX R+15
Cities with Similar Populations
- Lester Prairie, MN R+48
- Limington, ME R+39
- Hallstead, PA R+40
- Baroda, MI R+26
- Saugatuck, MI D+6
- Crystal, MI R+46
- Willis, VA R+54
- Green Springs, OH R+52
- Evans, MI R+36
- Manitou Beach, MI R+32
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.