Mazie K. Hirono is the Democrat U.S. Senator from Hawaii, in office since 2013.
Current term began January 3, 2025. In the Senate since January 3, 2013.
Committee assignments
- Senate Committee on Armed Services
- Senate Committee on Energy and Natural Resources
- Senate Committee on Small Business and Entrepreneurship
- Senate Committee on the Judiciary
- Senate Committee on Veterans' Affairs
Committee work shapes much of what happens in the Senate, from hearings to shaping bills before they reach the floor.
Term and next election
Mazie K. Hirono holds a Class 1 seat in the United States Senate. Senators serve six-year terms, and the two seats in each state sit in different classes, so they are not up for election in the same year. This seat is next on the ballot in 2030, when voters across Hawaii choose who fills it.
Hawaii
Mazie K. Hirono is one of two U.S. Senators for Hawaii, who represent the whole state rather than a single district. For the U.S. House delegation, see the Hawaii congressional districts. To find your own House representative, use the home page lookup.
Washington office: 109 Hart Senate Office Building Washington DC 20510
Frequently asked questions
When is Mazie K. Hirono next up for election?
This seat is a Class 1 Senate seat, next up for election in 2030. Every voter in Hawaii takes part in that race.
What committees does Mazie K. Hirono serve on?
Mazie K. Hirono serves on the Senate Committee on Armed Services, Senate Committee on Energy and Natural Resources, Senate Committee on Small Business and Entrepreneurship, Senate Committee on the Judiciary, Senate Committee on Veterans' Affairs.
How do I contact Mazie K. Hirono?
You can reach the office of Mazie K. Hirono by phone at 202-224-6361 or through the official U.S. Senate website. The Washington office is at 109 Hart Senate Office Building Washington DC 20510.
Related on this site
- Hawaii congressional districts
- All 100 U.S. senators
- 2026 Senate elections
- What does a U.S. senator do?
- How to find your U.S. senators
Last updated July 10, 2026.
Data last checked September 26, 2026.