New Berlin leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 96% of adults in New Berlin typically vote, above the U.S. average of about 62%. Among adults in New Berlin, ~41% vote Democratic, ~55% Republican, and ~4% don't vote. The map below shows estimated turnout by block group.
How New Berlin compares
Among cities within 25 miles, New Berlin leans more Republican than 39 of 94 neighbors.
New Berlin runs about 13 points more Republican than Wisconsin as a whole.
Politics vary noticeably by neighborhood within New Berlin. The southwest side is the most Republican-leaning (R+30) and the east side is the least Republican-leaning (R+5), a spread of about 25 points.
Why New Berlin 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 New Berlin, not a ranked or complete list of what matters most.
New Berlin votes Republican even though it is densely developed (about 83%, far above the Wisconsin average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; New Berlin, WI sits in the bottom tenth nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in New Berlin looks the way it does
Areas with strong routine healthcare access turn out at higher rates. New Berlin 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 97% of adults in New Berlin have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hales Corners, WI Even
- West Allis, WI D+14
- Elm Grove, WI D+10
- Muskego, WI R+24
- Greenfield, WI D+6
- Brookfield, WI Even
- Greendale, WI D+4
- Wauwatosa, WI D+38
- West Milwaukee, WI D+28
- Waukesha, WI R+7
Cities with Similar Populations
- Sierra Vista, AZ R+18
- Monroe, GA R+33
- Paducah, KY R+20
- Hermitage, TN D+10
- Northbrook, IL D+32
- Starkville, MS D+6
- Chelsea, MA D+31
- Raeford, NC D+12
- Fairport, NY D+22
- Rockledge, FL R+17
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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.