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

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

Kapulena leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.

 

About 65% of adults in Kapulena typically vote, near the U.S. average of about 62%. Among adults in Kapulena, ~40% vote Democratic, ~25% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.

How Kapulena compares

Among cities within 25 miles, Kapulena leans more Democratic than 12 of 20 neighbors.

Politically, Kapulena sits close to the rest of Hawaii.

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

Areas with many never-married adults vote Democratic. About 35% of adults in Kapulena have never been married, modestly above similar-sized cities (around 23%).

Non-English at home and voter turnout

Places with a low non-English-at-home share tend to turn out at a higher rate; Kapulena, HI sits in the bottom tenth nationally on this measure.

Why turnout in Kapulena looks the way it does

Homeowners vote more often than renters. About 92% of households in Kapulena own their home, about 27 points above the Hawaii average of 66%. Learn more about the findings and methodology on the political spectrum map.

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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.