Pierce County leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 78% of adults in Pierce County typically vote, above the U.S. average of about 62%. Among adults in Pierce County, ~32% vote Democratic, ~46% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Pierce County compares
Among counties within 50 miles, Pierce County leans more Republican than 8 of 14 neighbors.
Pierce County runs about 18 points more Republican than Wisconsin as a whole.
Politics vary noticeably by city within Pierce County. The southeast side is the most split-leaning (R+39) and the northwest side is the least split-leaning (Even), a spread of about 38 points.
Why Pierce County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Pierce County. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Pierce County, 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 Pierce County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Pierce 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 68%, about 8 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Pierce County have completed high school, above 98% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- St. Croix County, WI R+20
- Goodhue County, MN R+22
- Washington County, MN D+10
- Dakota County, MN D+11
- Pepin County, WI R+30
- Ramsey County, MN D+43
- Dunn County, WI R+15
- Wabasha County, MN R+30
- Hennepin County, MN D+43
- Polk County, WI R+33
Counties with Similar Populations
- Sweetwater County, WY R+53
- Butler County, MO R+52
- Okanogan County, WA R+16
- Nez Perce County, ID R+35
- Summit County, UT D+10
- Crawford County, OH R+51
- Clinton County, OH R+53
- Ohio County, WV R+20
- Fayette County, TN R+33
- St. John the Baptist Parish, LA D+27
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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.