Markham leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 70% of adults in Markham typically vote, above the U.S. average of about 62%. Among adults in Markham, ~17% vote Democratic, ~53% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Markham compares
Among cities within 25 miles, Markham leans more Republican than 16 of 34 neighbors.
Markham runs about 36 points more Republican than Texas as a whole.
Politics vary noticeably by neighborhood within Markham. The northwest side is the most Republican-leaning (R+71) and the south side is the least Republican-leaning (R+43), a spread of about 28 points.
Why Markham 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 Markham, not a ranked or complete list of what matters most.
Markham votes Republican even though it is densely developed (about 41%, modestly above the Texas average of 35%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 80% of households in Markham are family households, above 90% of cities.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Markham, TX sits in the top tenth nationally on this measure.
Why turnout in Markham looks the way it does
Homeowners vote more often than renters. About 97% of households in Markham own their home, about 22 points above the Texas average of 75%. Limited routine healthcare access lines up with lower turnout, and Markham sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Buckeye, TX R+35
- Elmaton, TX R+72
- Bay City, TX R+20
- Midfield, TX R+54
- Blessing, TX R+54
- Danevang, TX R+56
- Van Vleck, TX R+37
- Caney, TX R+38
- Magnet, TX R+42
Cities with Similar Populations
- Nixonville, SC R+48
- Minnesott Beach, NC R+26
- Gore Springs, MS R+54
- Sunflower, MS D+56
- West Mineola, TX R+76
- Ridgeway, OH R+63
- Ogdensburg, WI R+46
- Monument Valley, UT D+54
- Clarks Hill, IN R+49
- Apple Grove, WV R+61
All Local Stats
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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.