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Composite score - coming soon

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

Filter

Recent activity

DateActionPolicyStatus
2025-06-04Voted nay on “On the Cloture Motion PN12-33”Cloture Motion Agreed toNo bill (motion or nomination)
2025-06-04Voted nay on “On the Cloture Motion PN55-47”Cloture Motion Agreed toNo bill (motion or nomination)
2025-06-04Voted nay on “On the Cloture Motion PN55-9”Cloture Motion Agreed toNo bill (motion or nomination)
2025-06-04SponsoredS 1957 — No Place for LGBTQ+ Hate ActProposed
2025-06-04SponsoredS 1955 — Equal Access to Justice for Victims of Gun Violence ActProposed
2025-06-03Voted yea on “On the Nomination PN22-16”Nomination ConfirmedNo bill (motion or nomination)
2025-06-03Voted yea on “On the Cloture Motion PN22-16”Cloture Motion Agreed toNo bill (motion or nomination)
2025-06-03Voted nay on “On the Nomination PN25-19”Nomination ConfirmedNo bill (motion or nomination)
2025-06-03Voted nay on “On the Cloture Motion PN25-19”Cloture Motion Agreed toNo bill (motion or nomination)
2025-06-03Voted nay on “On the Nomination PN17”Nomination ConfirmedNo bill (motion or nomination)
2025-06-03SponsoredS 1367 — NO FAKES Act of 2025Proposed
2025-06-02Voted nay on “On the Cloture Motion PN17”Cloture Motion Agreed toNo bill (motion or nomination)
2025-06-02SponsoredSRES 260 — A resolution expressing support for the designation of June 6, 2025, as "National Gun Violence Awareness Day" and June 2025 as "National Gun Violence Awareness Month".Proposed
2025-05-22Voted nay on “On the Joint Resolution H.J.Res. 89”Joint Resolution PassedHJRES 89 — Providing congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine and Nonroad Engine Pollution Control Standards; The 'Omnibus' Low NOX Regulation; Waiver of Preemption; Notice of Decision".Passed 2025-06-12
2025-05-22Voted nay on “On the Motion to Proceed H.J.Res. 89”Motion to Proceed Agreed toHJRES 89 — Providing congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine and Nonroad Engine Pollution Control Standards; The 'Omnibus' Low NOX Regulation; Waiver of Preemption; Notice of Decision".Passed 2025-06-12
2025-05-22Voted nay on “On the Joint Resolution H.J.Res. 87”Joint Resolution PassedHJRES 87 — Providing congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine Pollution Control Standards; Heavy-Duty Vehicle and Engine Emission Warranty and Maintenance Provisions; Advanced Clean Trucks; Zero Emission Airport Shuttle; Zero-Emission Power Train Certification; Waiver of Preemption; Notice of Decision".Passed 2025-06-12
2025-05-22Voted nay on “On the Motion to Proceed H.J.Res. 87”Motion to Proceed Agreed toHJRES 87 — Providing congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine Pollution Control Standards; Heavy-Duty Vehicle and Engine Emission Warranty and Maintenance Provisions; Advanced Clean Trucks; Zero Emission Airport Shuttle; Zero-Emission Power Train Certification; Waiver of Preemption; Notice of Decision".Passed 2025-06-12
2025-05-22Voted nay on “On the Joint Resolution H.J.Res. 88”Joint Resolution PassedHJRES 88 — Providing congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine Pollution Control Standards; Advanced Clean Cars II; Waiver of Preemption; Notice of Decision".Passed 2025-06-12
2025-05-22SponsoredSRES 255 — A resolution honoring the life, achievements, and legacy of former United States Senator Christopher "Kit" Bond of Missouri.Passed 2025-05-22
2025-05-22SponsoredSRES 247 — A resolution designating May 2025 as "National Wildfire Preparedness Month".Passed 2025-06-16
2025-05-22SponsoredS 1910 — Real Education and Access for Healthy Youth Act of 2025Proposed
2025-05-22SponsoredS 1914 — Andrew Kearse Accountability for Denial of Medical Care Act of 2025Proposed
2025-05-21Voted nay on “On the Motion to Proceed H.J.Res. 88”Motion to Proceed Agreed toHJRES 88 — Providing congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine Pollution Control Standards; Advanced Clean Cars II; Waiver of Preemption; Notice of Decision".Passed 2025-06-12
2025-05-21Voted nay on “On the Joint Resolution S.J.Res. 55”Joint Resolution PassedSJRES 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 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
This score is a guide, not a verdict.