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

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

Sweetwater leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.

 

About 59% of adults in Sweetwater typically vote, near the U.S. average of about 62%. Among adults in Sweetwater, ~22% vote Democratic, ~37% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.

How Sweetwater compares

Among cities within 25 miles, Sweetwater leans more Republican than 4 of 35 neighbors.

Sweetwater runs about 13 points more Democratic than Idaho as a whole.

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

Rural areas vote Republican. About 5% of residents in Sweetwater live in densely developed areas, about 13 points below the Idaho average of 18%. A high family-household share predicts Republican voting, and about 76% of households in Sweetwater are family households, above 79% of cities.

Population density, never-married share, and Republican lean

Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as Sweetwater, ID does.

Why turnout in Sweetwater looks the way it does

Crowded housing lines up with lower turnout. About 10% of homes in Sweetwater have more than one occupant per room, above 97% of cities. 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.