53140 leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 65% of adults in 53140 typically vote, near the U.S. average of about 62%. Among adults in 53140, ~39% vote Democratic, ~26% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 53140 compares
Among zip codes within 15 miles, 53140 leans more Democratic than 14 of 19 neighbors.
53140 runs about 21 points more Democratic than Wisconsin as a whole. Wisconsin is roughly evenly split, and 53140 sits clearly on the Democratic side.
Politics vary noticeably by block within 53140. The southeast side is the most Democratic-leaning (D+39) and the north side is the least Democratic-leaning (D+10), a spread of about 29 points.
Why 53140 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 53140, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 85% of residents in 53140 live in densely developed areas, about 49 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 44% of adults in 53140 have never been married, above 91% of zip codes. 53140 runs against the grain of Wisconsin, a Democratic-leaning outlier in a roughly evenly split state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 53140, WI sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 53140 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 53140 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.