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

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

Haiku leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.

 

About 60% of adults in Haiku typically vote, near the U.S. average of about 62%. Among adults in Haiku, ~34% vote Democratic, ~26% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.

How Haiku compares

Among cities within 25 miles, Haiku leans more Democratic than 3 of 22 neighbors.

Haiku runs about 8 points more Republican than Hawaii as a whole.

Politics vary noticeably by neighborhood within Haiku. The southeast side is the most Democratic-leaning (D+36) and the northwest side is the least Democratic-leaning (D+12), a spread of about 24 points.

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

Areas with many never-married adults vote Democratic. About 37% of adults in Haiku have never been married, about 7 points above the U.S. average of 29%.

Renting and voter turnout

Places with renter-heavy households tend to turn out at a lower rate; Haiku, HI sits in the top quarter nationally on this measure.

Why turnout in Haiku looks the way it does

Crowded housing lines up with lower turnout. About 9% of homes in Haiku have more than one occupant per room, above 95% of cities. Renters vote less often than owners, and about 34% of households in Haiku rent, above 90% of cities. 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.