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

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

Waianae leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.

 

About 49% of adults in Waianae typically vote, below the U.S. average of about 62%. Among adults in Waianae, ~26% vote Democratic, ~23% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.

How Waianae compares

Among cities within 25 miles, Waianae leans more Democratic than 6 of 29 neighbors.

Waianae runs about 17 points more Republican than Hawaii as a whole.

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

Areas with many never-married adults vote Democratic. About 39% of adults in Waianae have never been married, modestly above similar-sized cities (around 32%).

Cancer-screening access and voter turnout

Places with low colon-cancer-screening access tend to turn out at a lower rate; Waianae, HI sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in Waianae looks the way it does

Areas with high food insecurity turn out at lower rates. About 31% of adults in Waianae report food insecurity, about 15 points above the U.S. average of 16%. Renters vote less often than owners, and about 37% of households in Waianae rent, above 92% 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.