Markham leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 70% of adults in Markham typically vote, above the U.S. average of about 62%. Among adults in Markham, ~25% vote Democratic, ~45% 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 29 of 38 neighbors.
Markham runs about 48 points more Republican than Washington as a whole. Washington leans Democratic overall, while Markham is one of the few Republican-leaning pockets.
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.
Areas with low college attainment vote Republican. About 5% of adults in Markham hold a bachelor's degree, about 29 points below the Washington average of 34%. Rural areas vote Republican, and Markham sits in the bottom quarter on density (about 2%, below 95% of cities). Markham runs against the grain of Washington, a Republican-leaning pocket in a Democratic-leaning state.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Markham, WA sits in the bottom tenth 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 Markham looks the way it does
Homeowners vote more often than renters. About 93% of households in Markham own their home, about 20 points above the Washington average of 73%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hoquiam, WA R+5
- Ocosta, WA R+30
- South Aberdeen, WA R+23
- Aberdeen, WA Even
- Junction City, WA R+18
- Cosmopolis, WA R+18
- Woodlawn, WA R+16
- New London, WA R+30
- Westport, WA Even
Cities with Similar Populations
- Martin, MI R+42
- Fremont, WI R+43
- Ararat, NC R+68
- Webb, AL R+67
- Hawk Point, MO R+62
- Osseo, MI R+47
- Harrisville, MI R+35
- Walnut Grove, MS R+3
- Tekamah, NE R+59
- Pequea, PA R+55
All Local Stats
Home Services
Sources and methodology
Precinct-level voting records used to fit the model come from Washington Secretary of State, Elections, 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.