Bridgeton leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 72% of adults in Bridgeton typically vote, above the U.S. average of about 62%. Among adults in Bridgeton, ~42% vote Democratic, ~30% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Bridgeton compares
Among cities within 25 miles, Bridgeton leans more Democratic than 104 of 175 neighbors.
Bridgeton runs about 35 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while Bridgeton is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Bridgeton. The east side runs the most Democratic (D+21) and the north side runs the most Republican (R+7), a spread of about 28 points.
Why Bridgeton 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 Bridgeton, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in Bridgeton live in densely developed areas, about 62 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Bridgeton sits in the top quarter (about 36%, above 83% of cities). Bridgeton 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; Bridgeton, MO sits in the top 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 Bridgeton looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Bridgeton 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 63%, above 58% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- St. Ann, MO D+25
- Maryland Heights, MO D+27
- Edmundson, MO D+27
- Breckenridge Hills, MO D+33
- Woodson Terrace, MO D+30
- Overland, MO D+24
- Hazelwood, MO D+37
- St. John, MO D+32
- Sycamore Hills, MO D+29
Cities with Similar Populations
- North Valley, NM D+14
- Fairview, OR D+22
- Thurmont, MD R+29
- Aberdeen, NC R+16
- Geneva, OH R+30
- Queensbury, NY Even
- Oakland, TN R+33
- Mcdonald, PA R+22
- Newcastle, OK R+56
- Park Hills, MO R+47
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.