Central Bench, Boise, ID Political Map | Democrat & Republican Areas in Central Bench

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

Central Bench leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.

 

About 63% of adults in Central Bench typically vote, near the U.S. average of about 62%. Among adults in Central Bench, ~38% vote Democratic, ~25% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.

How Central Bench compares

Among neighborhoods within 5 miles, Central Bench leans more Democratic than 10 of 16 neighbors.

Central Bench runs about 57 points more Democratic than Idaho as a whole. Idaho leans Republican overall, while Central Bench is one of the few Democratic-leaning pockets.

Politics vary noticeably by block within Central Bench. The northeast side is the most Democratic-leaning (D+32) and the southeast side is the least Democratic-leaning (D+11), a spread of about 22 points.

Why Central Bench leans the way it does

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

Dense areas vote Democratic. More than 99% of residents in Central Bench live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 49% of adults in Central Bench have never been married, above 80% of neighborhoods. Central Bench runs against the grain of Idaho, a Democratic-leaning pocket in a Republican-leaning state.

Developed land and Democratic lean

Places with a heavily developed built environment tend to lean Democratic; Central Bench, Boise, ID sits in the top quarter nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Central Bench looks the way it does

Turnout in Central Bench 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.

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.