Hawaii Senate District 21
State Senate District 21
Covers part of Honolulu County.
Who Holds This Seat
Running in 2026
Decided: Mike Gabbard (Democrat), Elected unopposed
Aug 8, 2026. This seat is up in 2026 but is not on the Nov 3 ballot. Official source
The District
Includes Kalaeloa, Kapolei, Makakilo, Ewa Villages, East Kapolei (part) and Ewa Gentry (part).
9 precincts · District lines: State legislative lines: U.S. Census Bureau TIGER/Line 2024 (SLDU/SLDL) · Precinct lines: Hawaii State Office of Elections, Election Precincts 2024 (May 2024), published by the Hawaii Statewide GIS Program (geodata.hawaii.gov AdminBnd/MapServer/13); State of Hawaii Terms of Use, public domain; precincts assigned to districts by the Office of Elections' own attributes
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President9 precinctsHawaii Office of ElectionsFinal — Hawaii Office of Elections,… | TRUMP, Donald J. / VANCE, JD (R)10,054 · 51.2% | HARRIS, Kamala D. / WALZ, Tim (D)9,233 · 47.0% | R+4.2 | 19,625 | Hawaii Office of ElectionsFinal — Hawaii Office of Elections,… |
| 2024 U.S. Senate9 precinctsHawaii Office of ElectionsFinal — Hawaii Office of Elections,… | Mazie K. HIRONO (D)9,956 · 51.9% | Bob MCDERMOTT (R)8,526 · 44.5% | D+7.5 | 19,171 | Hawaii Office of ElectionsFinal — Hawaii Office of Elections,… |
| 2022 U.S. Senate9 precinctsHawaii Office of ElectionsFinal — Hawaii Office of Elections,… | Brian SCHATZ (D)8,693 · 59.8% | Bob MCDERMOTT (R)5,379 · 37.0% | D+22.8 | 14,543 | Hawaii Office of ElectionsFinal — Hawaii Office of Elections,… |
| 2022 Governor9 precinctsHawaii Office of ElectionsFinal — Hawaii Office of Elections,… | GREEN, Josh / LUKE, Sylvia (D)7,441 · 50.6% | AIONA, Duke / TUPAI, Seaula, Jr. (R)7,264 · 49.4% | D+1.2 | 14,705 | Hawaii Office of ElectionsFinal — Hawaii Office of Elections,… |
Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
State Senator, Dist 21
2022 General Election · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| GABBARD, MikeDemocrat | Democrat | 8,164 | 58.9% |
| KHAN, Matthew D.Republican | Republican | 5,698 | 41.1% |
Final — Hawaii Office of Elections, Final Report (precinct media file) · Hawaii Office of Elections — General Election Final Report precinct-level media…