Frontenac is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 91% of adults in Frontenac typically vote, above the U.S. average of about 62%. Among adults in Frontenac, ~45% vote Democratic, ~46% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How Frontenac compares
Among cities within 25 miles, Frontenac sits roughly in the middle of the political spectrum, with 101 neighbors leaning further in the place's direction and 74 leaning the other way.
Frontenac runs about 17 points more Democratic than Missouri as a whole.
Politics vary noticeably by neighborhood within Frontenac. The northeast side runs the most Democratic (D+21) and the south side runs the most Republican (R+12), a spread of about 32 points.
Why Frontenac leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Frontenac. The lean here lands roughly where demographic data alone would predict.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Frontenac, MO does.
Why turnout in Frontenac looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Frontenac 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 76%, about 16 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 91% of households in Frontenac own their home, about 16 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and more than 99% of adults in Frontenac have completed high school, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Crystal Lake Park, MO R+6
- Huntleigh, MO R+23
- Westwood, MO D+11
- Warson Woods, MO Even
- Des Peres, MO Even
- Ladue, MO D+7
- Glendale, MO D+30
- Kirkwood, MO D+20
- Rock Hill, MO D+47
- Creve Coeur, MO D+24
Cities with Similar Populations
- Holiday City South, NJ R+11
- Newport, MN D+12
- Royal City, WA R+58
- Gothenburg, NE R+55
- Bidwell, OH R+54
- Riverside, MO Even
- Guilford, IN R+62
- Carthage, TN R+55
- Roan Mountain, TN R+73
- Kansasville, WI R+29
All Local Stats
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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.