American Falls, ID Political Map | Democrat & Republican Areas in American Falls

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

American Falls leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.

 

About 71% of adults in American Falls typically vote, above the U.S. average of about 62%. Among adults in American Falls, ~22% vote Democratic, ~49% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.

How American Falls compares

Among cities within 25 miles, American Falls leans more Republican than 2 of 11 neighbors.

Politically, American Falls sits close to the rest of Idaho.

Politics vary noticeably by neighborhood within American Falls. The southeast side is the most Republican-leaning (R+67) and the west side is the least Republican-leaning (R+35), a spread of about 32 points.

Why American Falls 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 American Falls, not a ranked or complete list of what matters most.

American Falls votes Republican even though it is densely developed (about 57%, far above the Idaho average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Low college attainment predicts Republican voting, and American Falls sits in the bottom quarter (about 15%, below 78% of cities).

Population density and Democratic lean

Places with high population density tend to lean Democratic; American Falls, ID sits in the top quarter nationally on this measure.

Why turnout in American Falls looks the way it does

Areas with limited routine healthcare access turn out at lower rates. American Falls is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.

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.