Madison County leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 63% of adults in Madison County typically vote, near the U.S. average of about 62%. Among adults in Madison County, ~18% vote Democratic, ~45% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How Madison County compares
Among counties within 50 miles, Madison County leans more Republican than 5 of 7 neighbors.
Madison County runs about 29 points more Republican than Texas as a whole.
Politics vary noticeably by city within Madison County. The northwest side is the most Republican-leaning (R+76) and the east side is the least Republican-leaning (R+27), a spread of about 49 points.
Why Madison 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 Madison County, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 72% of households in Madison County are family households, about 6 points above the U.S. average of 67%.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Madison County, TX sits in the bottom tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Madison County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Madison 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 49%, about 11 points below the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Leon County, TX R+69
- Walker County, TX R+20
- Brazos County, TX D+6
- Houston County, TX R+41
- Grimes County, TX R+42
- Robertson County, TX R+35
- Trinity County, TX R+58
- San Jacinto County, TX R+57
- Freestone County, TX R+56
- Burleson County, TX R+53
Counties with Similar Populations
- Martinsville City, VA D+22
- Pend Oreille County, WA R+38
- Fremont County, ID R+66
- Monroe County, OH R+63
- Grundy County, TN R+68
- Greene County, MS R+53
- Ford County, IL R+40
- Hughes County, OK R+53
- Archuleta County, CO R+14
- Izard County, AR R+65
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.