Bonner County leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 80% of adults in Bonner County typically vote, above the U.S. average of about 62%. Among adults in Bonner County, ~22% vote Democratic, ~57% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Bonner County compares
Among counties within 50 miles, Bonner County leans more Republican than 1 of 3 neighbors.
Bonner County runs about 7 points more Republican than Idaho as a whole.
Politics vary noticeably by city within Bonner County. The south side is the most Republican-leaning (R+59) and the north side is the least Republican-leaning (R+38), a spread of about 21 points.
Why Bonner County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Bonner County. The lean here lands roughly where demographic data alone would predict.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; Bonner County, ID sits in the bottom quarter nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in Bonner County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Bonner 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 66%, about 6 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Pend Oreille County, WA R+38
- Kootenai County, ID R+46
- Boundary County, ID R+64
- Spokane County, WA R+3
- Stevens County, WA R+37
- Shoshone County, ID R+43
- Lincoln County, MT R+50
- Benewah County, ID R+60
- Sanders County, MT R+54
- Lincoln County, WA R+54
Counties with Similar Populations
- Cherokee County, OK R+28
- Campbell County, WY R+65
- Chenango County, NY R+36
- Jackson County, FL R+41
- Coles County, IL R+26
- Cortland County, NY R+17
- Noble County, IN R+49
- Nelson County, KY R+46
- Barron County, WI R+28
- Franklin County, NY R+11
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Sources and methodology
Precinct-level voting records used to fit the model come from Idaho 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.