Butte County is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 65% of adults in Butte County typically vote, near the U.S. average of about 62%. Among adults in Butte County, ~8% vote Democratic, ~57% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Butte County compares
Butte County runs about 39 points more Republican than Idaho as a whole.
Why Butte County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Butte County, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in Butte County live in densely developed areas, about 16 points below the Idaho average of 18%.
Developed land and Republican lean
Places with a rural land-use pattern tend to lean Republican; Butte County, ID sits in the bottom tenth nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Butte County looks the way it does
Turnout in Butte County 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 Counties
- Blaine County, ID D+21
- Custer County, ID R+52
- Bingham County, ID R+54
- Clark County, ID R+65
- Bonneville County, ID R+43
- Jefferson County, ID R+71
- Power County, ID R+46
- Lincoln County, ID R+63
- Bannock County, ID R+25
- Madison County, ID R+35
Counties with Similar Populations
- Chase County, KS R+49
- Rawlins County, KS R+73
- Cochran County, TX R+47
- Pawnee County, NE R+61
- Cheyenne County, KS R+71
- Hitchcock County, NE R+77
- McIntosh County, ND R+61
- Frontier County, NE R+74
- Hamilton County, KS R+71
- Rich County, UT R+66
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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.