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

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

Waikapu leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.

 

About 51% of adults in Waikapu typically vote, below the U.S. average of about 62%. Among adults in Waikapu, ~30% vote Democratic, ~21% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.

How Waikapu compares

Among cities within 25 miles, Waikapu leans more Democratic than 7 of 23 neighbors.

Waikapu runs about 7 points more Republican than Hawaii as a whole.

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

Areas with high college attainment vote Democratic. About 39% of adults in Waikapu hold a bachelor's degree, about 10 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 33% of adults in Waikapu have never been married, above 84% of cities.

Cholesterol-screening access and voter turnout

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

Why turnout in Waikapu looks the way it does

Areas with high food insecurity turn out at lower rates. About 20% of adults in Waikapu report food insecurity, above 80% 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.