Petersville leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 81% of adults in Petersville typically vote, above the U.S. average of about 62%. Among adults in Petersville, ~20% vote Democratic, ~61% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How Petersville compares
Among cities within 25 miles, Petersville leans more Republican than 65 of 95 neighbors.
Petersville runs about 31 points more Republican than Missouri as a whole.
Why Petersville leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Petersville. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Petersville, MO sits above the national average 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 Petersville looks the way it does
Turnout in Petersville sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Labadie, MO R+48
- Gray Summit, MO R+47
- St. Albans, MO R+46
- Pacific, MO R+39
- Augusta, MO R+45
- Villa Ridge, MO R+49
- Matson, MO R+43
- Defiance, MO R+42
Cities with Similar Populations
- Hordville, NE R+68
- Pensaukee, WI R+42
- Kawela Bay, HI Even
- Jimtown, CA D+44
- North Petersburg, NY R+32
- Kymulga, AL Even
- Sand City, CA D+33
- Cloverland, IN R+45
- Colbert Heights, AL R+78
- Elmo, TX R+41
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.