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Official portrait of Mazie K. Hirono

Mazie K. Hirono

U.S. Senator · Hawaii

  • Democrat
  • Since 2007
  • Tenure: 4+ terms

Refreshed 16 h ago

As of 2026-10-19 · Methodology 2026.10.1

Contact info

  • Capitol office

    109 Hart Senate Office Building Washington DC 20510

    202-224-6361

  • District offices

    Honolulu

View all contact info

Evidence & sources

  • U.S. Senate roll-call votes

    Votes and participation (senate.gov)

  • Congress.gov bill records

    Sponsored and enacted bills

  • congress-legislators

    Terms, committees, offices

Stale, last successful update 2026-10-23

View all sources

Explore this record

Scorecard

Voting Record

45.2/ 100

Ranked 36 of 47 in the Senate minority

How this score is calculated:

  • Roll calls cast

    911 of 914 while seated (99.7%)

    94th percentile in cohort · 30 % weight

  • Substantive bills sponsored

    40 of 40 sponsored · 40.6 points

    24th percentile in cohort · 70 % weight

  • Bills enacted

    0 sponsored · 2 cosponsored

    0 passed a chamber · 0 reported · 40 introduced

Promise Adherence

0 of 5 promises scored

Collecting data - coming soon

How this score is calculated:

  • Reviewed promises

    0 scored of 5 needed

    0 promises from 0 sources this term

  • Days in office this term

    669 days (180 needed)

  • Promise capture coverage

    0 of 3 source kinds settled

Impact History (coming soon)

0 of 10 matched votes

Collecting data - coming soon

How this score is calculated:

  • Matched votes

    0 of 10 needed

  • District opinion cells

    0 snapshots frozen

    Needs ≥ 25 verified respondents and a lean ≥ 0.15

Approval Rating

0 of 1 public poll on record

Collecting data - coming soon

How this score is calculated:

  • Public polls averaged

    0 of 1 needed

  • Polls on file for this officeholder

    None recorded yet

  • Most recent fieldwork

    No poll on record

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Recent activity

DateActionPolicyStatus
2025-05-21Voted nay on “On the Point of Order S.J.Res. 55”Point of Order SustainedSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted yea on “On the Motion to Adjourn S.J.Res. 55”Motion to Adjourn RejectedSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted yea on “On the Motion (Motion to Recess for Ten Minutes)”Motion RejectedSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted yea on “On the Motion (Motion to Recess for Fifteen Minutes)”Motion RejectedSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted yea on “On the Motion (Motion to Recess for Thirty Minutes)”Motion RejectedSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted yea on “On the Motion (Motion to Recess for 60 Minutes)”Motion RejectedSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted yea on “On the Motion (Motion to Recess for Ninety Minutes)”Motion RejectedSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted nay on “On the Motion to Table S.J.Res. 55”Motion to Table Agreed toSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted yea on “On the Motion to Table S.J.Res. 55”Motion to Table FailedSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted nay on “On the Motion to Proceed S.J.Res. 55”Motion to Proceed Agreed toSJRES 55 — A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the National Highway Traffic Safety Administration relating to "Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference".Active
2025-05-21Voted nay on “On the Motion to Proceed S. 1582”Motion to Proceed Agreed toS 1582 — GENIUS ActPassed 2025-07-18
2025-05-21SponsoredS 1825 — AG RESEARCH ActProposed
2025-05-21SponsoredS 1853 — Parity for Native Hawaiian Veterans Act of 2025Proposed
2025-05-21SponsoredSRES 240 — A resolution affirming that diversity, equity, inclusion, and accessibility are fundamental values of the United States and emphasizing the ongoing need to address discrimination and inequality in the workplace, pre-K through 12th grade and higher education systems, government programs, the military, and our society.Proposed
2025-05-21SponsoredS 1844 — Teaching Asian American, Native Hawaiian, and Pacific Islander History Act of 2025Proposed
2025-05-20SponsoredS 1816 — Improving Seniors’ Timely Access to Care Act of 2025Proposed
2025-05-20SponsoredS 539 — PROTECT Our Children Reauthorization Act of 2025Active
2025-05-20SponsoredS 1814 — Supreme Court Ethics, Recusal, and Transparency Act of 2025Proposed
2025-05-20SponsoredS 1563 — Retired Law Enforcement Officers Continuing Service ActActive
2025-05-19Voted nay on “On Cloture on the Motion to Proceed S. 1582”Cloture on the Motion to Proceed Agreed toS 1582 — GENIUS ActPassed 2025-07-18
2025-05-19Voted nay on “On the Nomination PN24-4”Nomination ConfirmedNo bill (motion or nomination)
2025-05-19Voted nay on “On the Cloture Motion PN24-4”Cloture Motion Agreed toNo bill (motion or nomination)
2025-05-15Voted yea on “On the Motion to Discharge S.Res. 195”Motion to Discharge RejectedSRES 195 — A resolution requesting information on El Salvador's human rights practices pursuant to section 502B(c) of the Foreign Assistance Act of 1961.Active
2025-05-15Voted nay on “On the Nomination PN25-11”Nomination ConfirmedNo bill (motion or nomination)
2025-05-15SponsoredS 1793 — COUNTER ActProposed
This score is a guide, not a verdict.