Mazie Hirono
DU.S. Senator · Hawaii · 110th-119th, 19 years 8 months
Overview of the Representative's office, activities, and communications.
About
Hirono, Mazie Keiko A Senator and a Representative from Hawaii; born in Fukushima, Japan, November 3, 1947; graduated from Kaimuki High School, Honolulu, Hawaii; B.A., University of Hawaii, Manoa, Hawaii, 1970; J.D., Georgetown University, Washington, D.C., 1978; lawyer, private practice; member of the Hawaii state house of representatives, 1981-1994; Hawaii lieutenant governor, 1994-2002; elected as a Democrat to the One Hundred Tenth and to the two succeeding Congresses (January 3, 2007-January 3, 2013); was not a candidate for reelection to the House of Representatives but was elected as a Democrat to the United States Senate in 2012; reelected in 2018 and again in 2024 for the term ending January 3, 2031.
Official Biography · U.S. Congress.
Years served
19
Bills introduced
60
Enacted
0
Cosponsored
472
Committees
15
Performance & Participation
Votes CastTop 25%
100% — Voted in 866 of 869 roll call votes this congress.
Avg 97% · Most: 100% · Least: 87%
Vote IndependenceMiddle 50%
1.1% — Voted against their own party majority 9 of 855 times.
Avg 2.8% · Most independent: 19.0% · Most party-line: 0.0%
Cosponsors AttractedTop 25%
531 — Attracted 531 cosponsors across 60 bills.
Avg 320 · Most: 967 · Least: 0
Cosponsors Attracted Cross-AisleBottom 25%
28 — Attracted 28 cosponsors across the aisle.
Avg 79 · Most: 354 · Least: 0
Cosponsorships GivenTop 25%
472 — 472 bills cosponsored.
Avg 330 · Most: 727 · Least: 30
Cosponsorships Given Cross-AisleMiddle 50%
95 — 95 bills cosponsored across the aisle.
Avg 94 · Most: 425 · Least: 0
Social Media ToneiMiddle 50%
NegativePositive
Avg +0.65 · Most: +0.93 · Least: +0.48
Press Release ToneiBottom 25%
NegativePositive
Avg +0.33 · Most: +0.62 · Least: +0.09
Committee Assignments
15 committees · 1 leadership role
FEMA bill passes during Mazie Hirono’s visit
The Garden Island · Oct 9, 2026
Hirono leads bipartisan, bicameral resolution recognizing Filipino American History Month
Maui Now · Oct 5, 2026
Senator seems to confuse basketball teams in attempt to link Jack Smith and Fani Willis
Yahoo! News · Sep 29, 2026
Trump Veterans Appeals Nominees Face Democratic Scrutiny
Legis1 · Sep 28, 2026
An aging Congress' dilemma: Can they regulate AI without using it?
Axios · Sep 16, 2026
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Data sourced from official congressional records, CRS, and FEC filings. AllCiv Score methodology available at allciv.com/methodology.