Madero leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 66% of adults in Madero typically vote, near the U.S. average of about 62%. Among adults in Madero, ~28% vote Democratic, ~38% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Madero compares
Among cities within 25 miles, Madero leans more Republican than 38 of 39 neighbors.
Politically, Madero sits close to the rest of Texas.
Why Madero 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 Madero, not a ranked or complete list of what matters most.
Madero votes Republican even though it is densely developed (about 36%, above 83% of cities). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Madero, TX sits in the top 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 Madero looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Madero is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 29%, about 10 points above the Texas average of 19%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Palmview South, TX R+5
- Mission, TX R+4
- Granjeno, TX R+12
- Abram, TX R+6
- Palmview, TX R+3
- Palmhurst, TX R+9
- Alton, TX R+3
- McAllen, TX R+2
- Penitas, TX R+7
- Hidalgo, TX R+4
Cities with Similar Populations
- Brookville, NJ R+27
- Lake View Pines, NM R+9
- Loma Alta, TX R+73
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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.