Republican Senator Dan Sullivan has defeated a primary challenger with the same name, concluding one of the more unusual electoral contests of the 2026 election cycle.
Sullivan, who is seeking his second term, will now face former Democratic Congressman Mary Peltola in November. Peltola aims to make Alaska a battleground state in the race for control of the U.S. Senate.
Peltola, the first Alaska Native elected to Congress, previously won a special election for the state's lone House seat in 2022 and a subsequent full term, but lost her reelection bid in 2024 to Republican Nick Begich.
During the primary campaign, the incumbent Senator Sullivan had raised concerns that his namesake, retired teacher Daniel J. Sullivan Jr., was deliberately attempting to confuse voters and siphon votes, potentially aiding Peltola's campaign. The incumbent voiced these concerns to reporters in June, stating that the challenger was "purposely trying to trick" constituents.
The challenger, Daniel J. Sullivan Jr., has denied being part of any effort to assist Peltola. However, his voting record shows he has supported Democratic presidential candidates in the last three presidential elections. He also stated he voted for Republican Senator Lisa Murkowski and Peltola in past elections and attended a "No Kings" protest.
Former President Donald Trump amplified the incumbent's concerns in August, urging Alaskans on Truth Social to cast their ballots for the correct candidate. Trump accused Democrats of orchestrating the presence of another "Dan Sullivan" on the ballot to detract votes from the Republican senator, warning against being "fooled."
Trump specifically advised voters to select "Sullivan, Dan S. — Registered Republican/Incumbent."
The primary unfolded under Alaska's top-four system, where all candidates compete together, and the four highest vote-getters advance to the general election. The matchup between Senator Sullivan and Peltola is anticipated to be a closely watched Senate race with implications for the balance of power in the chamber. Democrats are aiming to flip four Senate seats to gain control, with Alaska representing a challenging but potential opportunity.
