Prairie Du Sac leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 93% of adults in Prairie Du Sac typically vote, above the U.S. average of about 62%. Among adults in Prairie Du Sac, ~39% vote Democratic, ~54% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.
How Prairie Du Sac compares
Among cities within 25 miles, Prairie Du Sac leans more Republican than 33 of 56 neighbors.
Prairie Du Sac runs about 15 points more Republican than Wisconsin as a whole.
Politics vary noticeably by neighborhood within Prairie Du Sac. The southwest side is the most Republican-leaning (R+25) and the northeast side is the least Republican-leaning (R+7), a spread of about 18 points.
Why Prairie Du Sac 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 Prairie Du Sac, not a ranked or complete list of what matters most.
Prairie Du Sac votes Republican even though it is densely developed (about 38%, modestly above the Wisconsin average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Prairie Du Sac, WI sits in the top 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 Prairie Du Sac looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Prairie Du Sac 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 67%, about 7 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Prairie Du Sac have completed high school, above 81% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Sauk City, WI R+9
- Lake Wisconsin, WI R+5
- Roxbury, WI Even
- Witwen, WI R+35
- Merrimac, WI R+18
- Mazomanie, WI D+5
- North Freedom, WI R+28
- Lodi, WI R+9
- Martinsville, WI D+14
- Black Earth, WI D+9
Cities with Similar Populations
- Finleyville, PA R+29
- Talking Rock, GA R+67
- Littlefield, TX R+45
- Colona, IL R+23
- Braidwood, IL R+32
- Fremont, IN R+45
- Larkspur, CO R+22
- New Lebanon, OH R+55
- Manton, MI R+49
- Bennett, CO R+45
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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.