Prairie du Chien leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 84% of adults in Prairie du Chien typically vote, above the U.S. average of about 62%. Among adults in Prairie du Chien, ~34% vote Democratic, ~50% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Prairie du Chien compares
Among cities within 25 miles, Prairie du Chien is the least Republican-leaning.
Prairie du Chien runs about 20 points more Republican than Wisconsin as a whole.
Politics vary noticeably by neighborhood within Prairie du Chien. The northeast side is the most Republican-leaning (R+31) and the northwest side is the least Republican-leaning (R+14), a spread of about 17 points.
Why Prairie du Chien 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 Chien, not a ranked or complete list of what matters most.
Prairie du Chien votes Republican even though it is densely developed (about 40%, well above the Wisconsin average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Prairie du Chien, WI sits in the top quarter nationally on this measure.
Why turnout in Prairie du Chien looks the way it does
Turnout in Prairie du Chien 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
- Marquette, IA R+27
- McGregor, IA R+32
- Wyalusing, WI R+43
- Brodtville, WI R+43
- Waukon Junction, IA R+33
- Watson, IA R+38
- Bagley, WI R+43
- Harpers Ferry, IA R+34
- Eastman, WI R+36
Cities with Similar Populations
- Brookville, PA R+49
- Walkerton, IN R+43
- Lake Carmel, NY R+17
- South Lebanon, OH R+33
- Jim Thorpe, PA R+25
- Steilacoom, WA D+29
- Glen St. Mary, FL R+73
- North Manchester, IN R+39
- Enoch, UT R+68
- Inverness, IL D+7
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.