Hawaii State Senate seat · lines in effect since 2022
Hawaii Senate District 1
A district of about 58,000 people, 33% Asian, 34% of adults with a bachelor's degree. It votes D+40.0 relative to the nation for president.
2022 election
Nov 8, 2022- Lorraine Inouye (D) · won · incumbent70.9%
- Helen C. Tupai (R)29.1%
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
Where it sits among all 25 seats
Every Hawaii State Senate 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 election for this seat
18 races since 1968; the seat changed party 1 time. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2022 | |||
| 2022 | Lorraine Inouye (D) | Helen C. Tupai (R) | 41.9 |
| Lines first used in 2012 | |||
| 2018 | Kaiali’i Kahele (D) | Kimberly A. Arianoff (I) | 74.9 |
| 2016 | No winner recorded | Kaiali’i Kahele (D) | — |
| 2016 special | Kaiali’i Kahele (D) | Kimberly A. Arianoff (I) | 77.7 |
| 2014 | Gilbert Kahele (D) | Gregory Arianoff (I) | 72.6 |
| 2012 | Gilbert Kahele (D) | — | Unopposed |
| Lines first used in 2002 | |||
| 2008 | Dwight Y. Takamine (D) | Ted H. S. Hong (R) | 26.4 |
| 2004 | Lorraine Inouye (D) | — | Unopposed |
| 2002 | Lorraine Inouye (D) | Charles Clarke (R) | 53.9 |
| Lines first used in 1992 | |||
| 1998 | Lorraine Inouye (D) | John S. Carroll (R) | 12.4 |
| 1994 | Malama Solomon (D) | Charles Clarke (R) | 11.8 |
| Lines first used in 1982 | |||
| 1988 | Andy Levin (D)Flip | Robert N. Herkes (R) | 37.5 |
| 1984 | Richard Henderson (R) | Jerry Rothstein (D) | 46.6 |
| Lines first used in 1972 | |||
| 1980 | Dante K. Carpenter · Richard Henderson (DEM) | Kats Yamada (D) | 1.5 |
| 1978 | John Ushijima · Stanley I. Hara · Dante K. Carpenter (D) | Richard Henderson (R) | 0.5 |
| 1974 | Richard Henderson · Stanley I. Hara · John Ushijima (REP) | John A. C. Wong (R) | 14.8 |
| Lines first used in 1962 | |||
| 1970 | Stanley I. Hara · Richard Henderson · John Ushijima (DEM) | Toshio Serizawa (D) | 1.7 |
| 1968 | William H. Hill (R) | — | Unopposed |
Primaries: 2014 Democratic primary
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 1
The state's districts in other chambers that share residents with this one, and the share of District 1's area in each.
- U.S. House
- HI-2 100%
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2024 | |
|---|---|
| President | D+40.8 |
| U.S. Senate | D+56.3 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 8, 2026, 7:01 PM ET
Who lives here, compared
Grey bars show the spread of all 25 seats. Small marks are other seats in Hawaii. The black marker is District 1.
Lower than 54% of seats.
Higher than 54% of seats.
Higher than 54% of seats.
Lower than 83% of seats.
Lower than 54% of seats.
Less dense than 75% 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 2444% college gradsD+30.4Not up in 2026District 5
28% college gradsD+27.1Held DDistrict 25
51% college gradsD+31.4Held DDistrict 4
35% college gradsD+29.6Not up in 2026
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