2024Final results
2024 election for U.S. Senate in Hawaii
U.S. Senate · Hawaii
Mazie K. Hirono (D) won with 64.6% of the vote, defeating Bob McDermott (R) by 32.7 points.
Mazie K. HironoDemocrat · winner
64.6%324,194
Bob McDermottRepublican
31.9%160,075
Shelby Pikachu BillionaireOther party
1.8%9,224
1.6%8,270
501,763 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
The seat over time
D − R margin in this seat's races around 2024
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Mazie K. HironoBob McDermott
$3.3M
Raised by the campaign
$23.2K
$2.8M
Spent by the campaign
$23.6K
$1.4M
Cash on hand
-$245
Campaign money: FEC, through Dec 31, 2024.
Source: FEC campaign filingsUpdated Dec 31, 2024
The candidates
Mazie K. Hirono (D)Bob McDermott (R)
Also on the ballot: Shelby Pikachu Billionaire (Other party), 1.8%; Emma Jane Avila Pohlman (Green), 1.6%