Bloomington, ID Political Map | Democrat & Republican Areas in Bloomington

By the BestNeighborhood data science team. Last updated May 2026.

Bloomington is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.

 

About 71% of adults in Bloomington typically vote, above the U.S. average of about 62%. Among adults in Bloomington, ~11% vote Democratic, ~60% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.

How Bloomington compares

Among cities within 25 miles, Bloomington leans more Republican than 6 of 30 neighbors.

Bloomington runs about 34 points more Republican than Idaho as a whole.

Why Bloomington leans the way it does

This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Bloomington, not a ranked or complete list of what matters most.

Rural areas with a high white share vote Republican. Bloomington sits in the bottom quarter on density and about 96% of residents are non-Hispanic white, about 14 points above the Idaho average of 83%. A high family-household share predicts Republican voting, and about 78% of households in Bloomington are family households, above 85% of cities.

Walkability and Republican lean

Places with a low walkability score tend to lean Republican; Bloomington, ID sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Bloomington looks the way it does

Homeowners vote more often than renters. About 95% of households in Bloomington own their home, about 15 points above the Idaho average of 79%. High high-school completion lines up with higher turnout, and about 96% of adults in Bloomington have completed high school, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.