20735 is a Democratic stronghold. About 90% of voters here vote Democratic and 10% Republican.
About 73% of adults in 20735 typically vote, above the U.S. average of about 62%. Among adults in 20735, ~66% vote Democratic, ~7% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How 20735 compares
Among zip codes within 15 miles, 20735 leans more Democratic than 63 of 81 neighbors.
20735 runs about 50 points more Democratic than Maryland as a whole.
Why 20735 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 20735, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 20735 is about 7%, about 65 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 37% of adults in 20735 have never been married, above 82% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 20735, MD sits in the top quarter nationally on this measure.
Why turnout in 20735 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 20735 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 61%. Homeowners vote more often than renters, and about 90% of households in 20735 own their home, compared to around 59% in nearby zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from Maryland State Board of 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.