Bremer County leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 94% of adults in Bremer County typically vote, above the U.S. average of about 62%. Among adults in Bremer County, ~35% vote Democratic, ~59% Republican, and ~6% don't vote. The map below shows estimated turnout by block group.
How Bremer County compares
Among counties within 50 miles, Bremer County leans more Republican than 3 of 13 neighbors.
Bremer County runs about 12 points more Republican than Iowa as a whole.
Politics vary noticeably by city within Bremer County. The northwest side is the most Republican-leaning (R+47) and the west side is the least Republican-leaning (R+10), a spread of about 36 points.
Why Bremer County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Bremer 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; Bremer County, IA 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 Bremer County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Bremer 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 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Bremer County have completed high school, above 98% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Black Hawk County, IA D+3
- Butler County, IA R+43
- Chickasaw County, IA R+40
- Fayette County, IA R+30
- Floyd County, IA R+30
- Buchanan County, IA R+36
- Grundy County, IA R+42
- Franklin County, IA R+43
- Howard County, IA R+35
- Mitchell County, IA R+36
Counties with Similar Populations
- Cherokee County, AL R+76
- Prentiss County, MS R+58
- Chattooga County, GA R+58
- Audrain County, MO R+48
- Manistee County, MI R+18
- Grant County, KY R+62
- Hickman County, TN R+67
- Otsego County, MI R+28
- Lauderdale County, TN R+23
- Routt County, CO D+12
Sources and methodology
Precinct-level voting records used to fit the model come from Iowa Secretary of State, Elections, 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.