Martin County is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 72% of adults in Martin County typically vote, above the U.S. average of about 62%. Among adults in Martin County, ~11% vote Democratic, ~61% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Martin County compares
Among counties within 50 miles, Martin County leans more Republican than 5 of 7 neighbors.
Martin County runs about 55 points more Republican than Texas as a whole.
Politics vary noticeably by city within Martin County. The west side is the most Republican-leaning (R+81) and the southeast side is the least Republican-leaning (R+57), a spread of about 24 points.
Why Martin 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 Martin County, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 78% of households in Martin County are family households, about 11 points above the U.S. average of 67%.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; Martin County, TX sits in the bottom tenth nationally on this measure.
Why turnout in Martin County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Martin County 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 21%, about 11 points above the U.S. average of 10%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Midland County, TX R+48
- Howard County, TX R+50
- Glasscock County, TX R+85
- Ector County, TX R+42
- Dawson County, TX R+47
- Andrews County, TX R+62
- Borden County, TX R+93
- Sterling County, TX R+80
- Mitchell County, TX R+50
- Crane County, TX R+48
Counties with Similar Populations
- Dewey County, SD D+30
- Alexander County, IL R+4
- Aleutians West Census Area, AK Even
- Delta County, TX R+68
- Brule County, SD R+52
- Stevens County, KS R+73
- Warren County, GA D+15
- Polk County, NE R+62
- Coal County, OK R+68
- Carter County, MO R+71
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.