Berlin leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 88% of adults in Berlin typically vote, above the U.S. average of about 62%. Among adults in Berlin, ~32% vote Democratic, ~56% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How Berlin compares
Among cities within 25 miles, Berlin leans more Republican than 8 of 55 neighbors.
Berlin runs about 27 points more Republican than Wisconsin as a whole.
Politics vary noticeably by neighborhood within Berlin. The northwest side is the most Republican-leaning (R+40) and the northeast side is the least Republican-leaning (R+26), a spread of about 14 points.
Why 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 Berlin, not a ranked or complete list of what matters most.
Berlin votes Republican even though it is densely developed (about 36%, modestly above the Wisconsin average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Berlin, WI sits above the national average on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Berlin looks the way it does
Turnout in Berlin 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
- Fairburn, WI R+36
- Koro, WI R+41
- Eureka, WI R+41
- Borth, WI R+44
- Green Lake, WI R+19
- Lohrville, WI R+31
- Redgranite, WI R+32
- Waukau, WI R+40
- Zion, WI R+29
- Ripon, WI R+21
Cities with Similar Populations
- Ranson, WV R+21
- Pittsboro, IN R+41
- Greenville, KY R+48
- Diboll, TX R+29
- Girard, PA R+22
- Rose Hill, KS R+46
- Albany, KY R+71
- Oceano, CA D+9
- Marine City, MI R+32
- Ulysses, KS R+58
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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.