Congress is out of session until Monday, November 9 for the midterm campaign. No new roll-call votes until then; the last were the House on Sep 16 and the Senate on Sep 30.

People / Mazie K. Hirono / Questions

Questions about Mazie K. Hirono

U.S. Senator from Hawaii · Democrat · from roll-call votes in the 119th Congress

How often does Mazie K. Hirono vote with her party?

Mazie K. Hirono voted with Democrats on 99% of party-line votes in the 119th Congress (Senate median 99%), as of Nov 1, 2026.

Party-line votes
Party-line votes cast836
With Democrats825 (99%)
Against Democrats11
Senate median99%
Senate Democrats, median96%

Source: Voteview roll calls (UCLA) · How we measure · Who breaks with party most · Updated Nov 1, 2026

How bipartisan is Mazie K. Hirono?

Mazie K. Hirono voted the same way as Republicans on 5% of shared contested votes in the 119th Congress (Senate median 9%), 89th most of 99 Senate members, as of Nov 1, 2026.

Bipartisanship
Contested votes cast889
Same vote as Republicans5%
Senate median9%
Rank in the chamber89th of 99

Source: Voteview roll calls (UCLA) · How we measure · Updated Nov 1, 2026

Which members vote most like Mazie K. Hirono?

Lisa Blunt Rochester voted the same way as Mazie K. Hirono most often: 97% of 884 shared contested votes in the 119th Congress (median for two Senate members of the same party 96%), as of Nov 1, 2026.

Median for two Senate members of the same party: 96%; of different parties: 8%.

Members who vote most alike
MemberSame voteShared votes
DLisa Blunt Rochester97%884
DPatty Murray97%841
DChris Van Hollen97%875
DEdward J. Markey97%883
DJeff Merkley96%882
RSusan M. Collins Closest of the Republicans20%889

Source: Voteview roll calls (UCLA) · How we measure · Updated Nov 1, 2026

How much of Mazie K. Hirono’s PAC money came from PACs whose organizations lobbied on bills she voted on?

Of the 20 PACs that gave to Mazie K. Hirono in 2025–26 and have a lobbying organization behind them, 10 belong to organizations that lobbied on bills that came to a vote with her in the chamber or that she cosponsored or sponsored (50%; Senate median 41%); together they gave $27K of the $47K in PAC money she received (57%; Senate median 29%), as of Nov 2, 2026.

Largest PACs this cycle: International Brotherhood of Electrical Workers, Pfizer, Booz Allen Hamilton. What each gave is part of Pro.

PACs whose organizations lobbied
PACs that gave in 2025–2622
With a lobbying organization behind them20
Of those, their organizations lobbied on these bills10 (50%)
Senate median41%
Their gifts, together$27K of $47K

Source: FEC PAC gifts · Senate LDA lobbying filings · Bill by bill on the profile · How we measure · Updated Nov 2, 2026

Who is running against Mazie K. Hirono in 2026?

No one in 2026: Mazie K. Hirono’s Senate seat is next on the ballot in 2030.

Source: senate.gov: senators by class