Hawaii House of Representatives seat · lines in effect since 2022
Hawaii House District 12
A district of about 33,000 people, 32% of adults with a bachelor's degree. It votes D+34.3 relative to the nation for president.
Where it sits among all 51 seats
Every Hawaii House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2022 | 2024 | 2026 | |
|---|---|---|---|
| U.S. Senate | No race | D+45.1 | No race |
| Hawaii House of Representatives | D+48.2 | D+38.9 | D+42.3 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: Hawaii Office of ElectionsUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 51 seats. Small marks are other seats in Hawaii. The black marker is District 12.
Lower than 54% of seats.
Higher than 86% of seats.
Higher than 88% of seats.
Lower than 82% of seats.
Lower than 74% of seats.
Less dense than 78% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 321% college gradsD+28.9CountingDistrict 8
36% college gradsD+32.6Held DDistrict 13
29% college gradsD+33.6CountingDistrict 4
25% college gradsD+31.2Counting
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- Kyle T. Yamashita (D)
2025– · Won 2024 by 38.9 - Kyle T. Yamashita (D)
2023–2025 · Won 2022 by 48.2
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)