Wailuku, HI Political Map | Democrat & Republican Areas in Wailuku

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

Wailuku leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.

 

About 53% of adults in Wailuku typically vote, below the U.S. average of about 62%. Among adults in Wailuku, ~31% vote Democratic, ~22% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.

How Wailuku compares

Among cities within 25 miles, Wailuku leans more Democratic than 12 of 23 neighbors.

Wailuku runs about 4 points more Republican than Hawaii as a whole.

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

Areas with many never-married adults vote Democratic. About 35% of adults in Wailuku have never been married, about 5 points above the U.S. average of 29%.

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Wailuku, HI sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in Wailuku looks the way it does

Crowded housing lines up with lower turnout. About 11% of homes in Wailuku 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 Hawaii Office of 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. Some land-use inputs for Hawaii, including walkability and the environmental-justice index, are estimated rather than measured, so the figures here carry added uncertainty. Full methodology and findings: political spectrum map.

Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.