Duplainville leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About more than 99% of adults in Duplainville typically vote, above the U.S. average of about 62%. Among adults in Duplainville, ~52% vote Democratic, ~61% Republican, and ~-13% don't vote. The map below shows estimated turnout by block group.
How Duplainville compares
Among cities within 25 miles, Duplainville leans more Republican than 28 of 94 neighbors.
Duplainville runs about 7 points more Republican than Wisconsin as a whole.
Why Duplainville 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 Duplainville, not a ranked or complete list of what matters most.
Duplainville votes Republican even though it is densely developed (about 44%, well above the Wisconsin average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 90% of households in Duplainville are family households, in the top fraction of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Duplainville, 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 Duplainville looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Duplainville 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 77%, about 17 points above the U.S. average of 60%. Homeowners vote more often than renters, and more than 99% of households in Duplainville own their home, compared to around 78% in nearby cities. High high-school completion lines up with higher turnout, and about 97% of adults in Duplainville have completed high school, above 89% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Brookfield, WI Even
- Lannon, WI R+21
- Butler, WI R+3
- Menomonee Falls, WI R+7
- Elm Grove, WI D+10
- Sussex, WI R+23
- Pewaukee, WI R+13
- Wauwatosa, WI D+38
- Waukesha, WI R+7
- Merton, WI R+32
Cities with Similar Populations
- West Robbin, TN R+71
- Union Furnace, OH R+57
- Ochwalkee, GA R+41
- Hunters, WA R+53
- Sprague, AL R+9
- Snowflake, VA R+72
- West Delhi, NY R+12
- Dicksonburg, PA R+52
- Wilmington, VA R+12
- McLaurin, MS R+74
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.