Brown County is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 83% of adults in Brown County typically vote, above the U.S. average of about 62%. Among adults in Brown County, ~40% vote Democratic, ~43% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Brown County compares
Among counties within 50 miles, Brown County leans more Republican than 3 of 10 neighbors.
Politically, Brown County sits close to the rest of Wisconsin.
Politics vary noticeably by city within Brown County. The east side runs the most Democratic (D+8) and the southeast side runs the most Republican (R+26), a spread of about 35 points.
Why Brown County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Brown County. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Brown County, WI sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Brown County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Brown County 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 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 94% of adults in Brown County have completed high school, above 80% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Kewaunee County, WI R+39
- Outagamie County, WI R+13
- Calumet County, WI R+23
- Oconto County, WI R+40
- Manitowoc County, WI R+24
- Winnebago County, WI R+3
- Shawano County, WI R+35
- Menominee County, WI D+59
- Waupaca County, WI R+34
- Door County, WI R+3
Counties with Similar Populations
- Buncombe County, NC D+18
- Washington County, MN D+10
- Webb County, TX Even
- Cherokee County, GA R+33
- Santa Cruz County, CA D+49
- Erie County, PA Even
- Madison County, IL R+11
- Frederick County, MD D+10
- St. Tammany Parish, LA R+35
- St. Joseph County, IN D+9
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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.