Mount Vernon leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 79% of adults in Mount Vernon typically vote, above the U.S. average of about 62%. Among adults in Mount Vernon, ~47% vote Democratic, ~32% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Mount Vernon compares
Among cities within 25 miles, Mount Vernon leans more Democratic than 40 of 54 neighbors.
Mount Vernon runs about 21 points more Democratic than Wisconsin as a whole. Wisconsin is roughly evenly split, and Mount Vernon sits clearly on the Democratic side.
Politics vary noticeably by neighborhood within Mount Vernon. The northwest side is the most Democratic-leaning (D+30) and the north side is the least Democratic-leaning (D+13), a spread of about 17 points.
Why Mount Vernon 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 Mount Vernon, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 46% of adults in Mount Vernon hold a bachelor's degree, about 17 points above the U.S. average of 28%. Mount Vernon runs against the grain of Wisconsin, a Democratic-leaning outlier in a roughly evenly split state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Mount Vernon, WI sits in the top tenth 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 Mount Vernon looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Mount Vernon 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 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Mount Vernon have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Mount Horeb, WI D+16
- Forward, WI D+13
- Blue Mounds, WI D+26
- Barneveld, WI Even
- Pine Bluff, WI D+19
- Verona, WI D+45
- New Glarus, WI Even
- Cross Plains, WI D+25
- Hollandale, WI R+8
- Black Earth, WI D+9
Cities with Similar Populations
- Hashtown, IN R+58
- Dyess, AR R+71
- New Richmond, WV R+68
- Donovan, IL R+52
- Sacred Heart, OK R+69
- Bovine, AR R+72
- Brandywine, WV R+63
- Spring Glen, WA D+25
- Big Rock, VA R+67
- Wyatts Chapel, TN R+72
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Sources and methodology
Precinct-level voting records used to fit the model come from Wisconsin Elections Commission, 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.