St. Francois County leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 68% of adults in St. Francois County typically vote, above the U.S. average of about 62%. Among adults in St. Francois County, ~18% vote Democratic, ~50% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How St. Francois County compares
Among counties within 50 miles, St. Francois County leans more Republican than 3 of 11 neighbors.
St. Francois County runs about 29 points more Republican than Missouri as a whole.
Politics vary noticeably by city within St. Francois County. The southwest side is the most Republican-leaning (R+66) and the southeast side is the least Republican-leaning (R+41), a spread of about 25 points.
Why St. Francois County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in St. Francois County. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; St. Francois County, MO sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in St. Francois County looks the way it does
Turnout in St. Francois County sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Washington County, MO R+63
- Ste. Genevieve County, MO R+55
- Iron County, MO R+60
- Madison County, MO R+63
- Jefferson County, MO R+39
- Perry County, MO R+62
- Randolph County, IL R+45
- Monroe County, IL R+39
- Bollinger County, MO R+70
- Reynolds County, MO R+67
Counties with Similar Populations
- Ionia County, MI R+30
- Rice County, MN Even
- Aroostook County, ME R+30
- Williamson County, IL R+36
- Grant County, IN R+34
- Montcalm County, MI R+41
- Jones County, MS R+32
- Jefferson County, AR D+22
- Wayne County, IN R+31
- Spalding County, GA R+8
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.