St Denis leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 83% of adults in St Denis typically vote, above the U.S. average of about 62%. Among adults in St Denis, ~49% vote Democratic, ~34% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How St Denis compares
Among neighborhoods within 5 miles, St Denis is the least Democratic-leaning.
St Denis runs about 11 points more Republican than Maryland as a whole.
Politics vary noticeably by block within St Denis. The southeast side is the most Democratic-leaning (D+26) and the east side is the least Democratic-leaning (D+3), a spread of about 24 points.
Why St Denis 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 St Denis, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 67% of adults in St Denis hold a bachelor's degree, about 38 points above the U.S. average of 28%.
Never-married share, developed land, and voter turnout
Places that combine a low never-married share and a rural land-use pattern tend to turn out at a higher rate, as St Denis, Catonsville, MD does.
Why turnout in St Denis looks the way it does
Areas with strong routine healthcare access turn out at higher rates. St Denis 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 73%, about 13 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Catonsville Heights, Catonsville, MD D+45
- Westchester, Catonsville, MD D+34
- Westowne, Catonsville, MD D+50
- Westgate, Baltimore, MD D+77
- Westview Park, Woodlawn, MD D+57
- Morrell Park, Baltimore, MD D+22
- Edmondson Heights, Woodlawn, MD D+81
- Beechfielf-Irvington Area, Baltimore, MD D+83
- Lakeland, Baltimore, MD D+56
- Pumphrey, Linthicum, MD D+9
Neighborhoods with Similar Populations
- South Elmwood, Providence, RI D+28
- The Gulch, Nashville, TN D+11
- Charles Page, Tulsa, OK R+12
- West Acres, Fargo, ND D+21
- Lance, Kenosha, WI D+7
- Bernon Heights, Woonsocket, RI D+4
- South Park, Des Moines, IA D+14
- Woodlands at Fiore, Buffalo Grove, IL D+26
- West Lake Sammamish, Bellevue, WA D+42
- Arrowhead Park, Brick, NJ R+33
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.