Hawaii State Senate District 21

Next vote Tue, Nov 3, 2026 · Represented by Mike Gabbard Democratic · Member list as of Oct 28

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Last election: Mike Gabbard (Democratic) won by 17.8 points, 2022

More about this seat

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Official results for Hawaii

History (12 elections for this seat)

Votes for listed candidates: 13,862
Election day: November 8, 2022
District map: Older district map (2022)

Hawaii Senate District 21, 1982 to 2022, 2022, every candidate
Candidate	Party	Votes and share	Share
DemocraticMike GabbardWon(incumbent)	Democratic	8,16458.9%	58.9%
RepublicanMatthew D. Khan	Republican	5,69841.1%	41.1%

Votes for listed candidates: 9,857
Election day: November 6, 2018
District map: Older district map (2012 to 2021)

Hawaii Senate District 21, 1982 to 2022, 2018, every candidate
Candidate	Party	Votes and share	Share
DemocraticMaile ShimabukuroWon(incumbent)	Democratic	5,80858.9%	58.9%
RepublicanDiamond D. Garcia	Republican	4,04941.1%	41.1%

Votes for listed candidates: 8,949
Election day: November 4, 2014
District map: Older district map (2012 to 2021)

Hawaii Senate District 21, 1982 to 2022, 2014, every candidate
Candidate	Party	Votes and share	Share
DemocraticMaile S. ShimabukuroWon(incumbent)	Democratic	6,07967.9%	67.9%
RepublicanTercia L. Ku	Republican	2,87032.1%	32.1%

Votes for listed candidates: 10,337
Election day: November 6, 2012
District map: Older district map (2012 to 2021)

Hawaii Senate District 21, 1982 to 2022, 2012, every candidate
Candidate	Party	Votes and share	Share
DemocraticMaile S. ShimabukuroWon	Democratic	7,93276.7%	76.7%
RepublicanJohnson, Dicky J J. Johnson	Republican	2,40523.3%	23.3%

Votes for listed candidates: 10,147
Election day: November 4, 2008
District map: Older district map (2002 to 2011)

Hawaii Senate District 21, 1982 to 2022, 2008, every candidate
Candidate	Party	Votes and share	Share
DemocraticColleen HanabusaWon(incumbent)	Democratic	7,81877.0%	77.0%
RepublicanJohnson, Dicky J J. Johnson	Republican	2,32922.9%	22.9%

Votes for listed candidates: 9,957
Election day: November 2, 2004
District map: Older district map (2002 to 2011)

Hawaii Senate District 21, 1982 to 2022, 2004, every candidate
Candidate	Party	Votes and share	Share
DemocraticColleen HanabusaWon(incumbent)	Democratic	7,30773.4%	73.4%
RepublicanJohnson, Dicky J J. Johnson	Republican	2,65026.6%	26.6%

Votes for listed candidates: 8,578
Election day: November 5, 2002
District map: Older district map (2002 to 2011)

Hawaii Senate District 21, 1982 to 2022, 2002, every candidate
Candidate	Party	Votes and share	Share
DemocraticColleen HanabusaWon(incumbent)	Democratic	6,09971.1%	71.1%
RepublicanJohnson, Dicky J Johnson	Republican	2,47928.9%	28.9%

Votes for listed candidates: 10,812
Election day: November 3, 1998
District map: Older district map (1992 to 2001)

Hawaii Senate District 21, 1982 to 2022, 1998, every candidate
Candidate	Party	Votes and share	Share
DemocraticColleen HanabusaWon	Democratic	8,20175.8%	75.8%
RepublicanJohnson, Dicky J Johnson	Republican	2,61124.1%	24.1%

Votes for listed candidates: 8,978
Election day: November 8, 1994
District map: Older district map (1992 to 2001)

Hawaii Senate District 21, 1982 to 2022, 1994, every candidate
Candidate	Party	Votes and share	Share
DemocraticJames AkiWon(incumbent)	Democratic	5,93866.1%	66.1%
RepublicanLinda Kaleiwahea	Republican	3,04033.9%	33.9%

Hawaii Senate District 21, 1982 to 2022, 1988, every candidate
Candidate	Party	Votes and share	Share
DemocraticNorman MizuguchiWon(incumbent)	Democratic	12,517100.0%	100.0%

Votes for listed candidates: 13,672
Election day: November 6, 1984
District map: Older district map (1984 to 1991)

Hawaii Senate District 21, 1982 to 2022, 1984, every candidate
Candidate	Party	Votes and share	Share
DemocraticNorman MizuguchiWon(incumbent)	Democratic	9,42869.0%	69.0%
RepublicanJane P. Keiser	Republican	4,24431.0%	31.0%

Hawaii Senate District 21, 1982 to 2022, 1982, every candidate
Candidate	Party	Votes and share	Share
DemocraticGerald T. HaginoWon	Democratic	7,778100.0%	100.0%

1982 to 2022: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), retrieved Oct 28, 2026. Compiled by Carl Klarner (Harvard Dataverse) from official returns; not an official source

Last contest in this district on file: 2022.

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Election Wrld. (2026). Hawaii State Senate District 21, election results 1982 to 2022. https://www.electionwrld.com/hi/senate/21. Retrieved October 31, 2026.

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Sources

Sources: Census TIGERweb Legislative MapServer (120th CDs layer 0, 119th CDs layer 4, 2026 SLD upper layer 1 and lower layer 2) (US Census Bureau, public domain), retrieved Oct 28, 2026; Open Civic Data division identifiers (census_autogenerated us_sldl/us_sldu and openstates state files); also (sld-recent.json): Open Civic Data division identifiers (country-us) (CC0 (repository); also (sld-recent.json): CC0 1.0), retrieved Oct 28, 2026; Open States people (current) CSVs (CC0-1.0 (Open States people data)), retrieved Oct 28, 2026, compiled by Open States volunteers and staff (rosters from state legislature sites) from official returns, not an official source; State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse) (CC0 1.0), retrieved Oct 28, 2026, compiled by Carl Klarner (Harvard Dataverse) from official returns, not an official source.

District id: ocd-division/country:us/state:hi/sldu:21

DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse)Data as of Oct 28, 2026