Mark Twain is a Democratic stronghold. About 92% of voters here vote Democratic and 8% Republican.
About 58% of adults in Mark Twain typically vote, near the U.S. average of about 62%. Among adults in Mark Twain, ~53% vote Democratic, ~5% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How Mark Twain compares
Among neighborhoods within 5 miles, Mark Twain leans more Democratic than 10 of 15 neighbors.
Mark Twain runs about 103 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while Mark Twain is one of the few Democratic-leaning pockets.
Why Mark Twain leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Mark Twain, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Mark Twain live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 48% of adults in Mark Twain have never been married, above 78% of neighborhoods. Mark Twain runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Mark Twain, St. Louis, MO 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 Mark Twain looks the way it does
Areas with high food insecurity turn out at lower rates. About 41% of adults in Mark Twain report food insecurity, about 24 points above the U.S. average of 16%. High-crime urban areas turn out at lower rates, and Mark Twain sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Penrose, St. Louis, MO D+86
- Wells-Goodfellow, St. Louis, MO D+86
- North Pointe, St. Louis, MO D+89
- O'Fallon, St. Louis, MO D+87
- The Greater Ville, St. Louis, MO D+87
- Baden, St. Louis, MO D+83
- West End, St. Louis, MO D+80
- Jeff-Vander-Lou, St. Louis, MO D+84
- Debaliviere Place, St. Louis, MO D+81
- Central West End, St. Louis, MO D+69
Neighborhoods with Similar Populations
- Angels Triangle, El Paso, TX D+22
- Hillcrest, Boise, ID D+10
- Landsdowne, Youngstown, OH D+66
- Cobblestone, Jacksonville, FL R+5
- Kensington-San Francisco, Berkeley, CA D+84
- East Village, Cuyahoga Falls, OH D+7
- Brookhaven-Lansdowne, Lexington, KY D+25
- Shadow Wood, Coral Springs, FL D+26
- Northdale, Coon Rapids, MN D+7
- Valley View, York, PA Even
Sources and methodology
Precinct-level voting records used to fit the model come from Missouri 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.