The Justice Department's lawsuit, filed in Alaska District Court, seeks to delay certification if Senator Sullivan loses by a margin smaller than the number of votes cast for Daniel J. Sullivan, a retired teacher who appears on the ballot as Daniel J. Sullivan Jr. without party affiliation.
The administration argues that the second Dan Sullivan's candidacy violates the National Voter Registration Act. "Daniel J. Sullivan decided to run for Senator in 2026 as a Republican with the intention of misleading supporters of Sen. Sullivan into voting for him," the lawsuit states. "The sole purpose of his candidacy is to benefit the Peltola campaign by reducing the number of votes for Sen. Sullivan."
A Justice Department spokesperson said the department is "taking the necessary steps to ensure that this frivolous candidacy does not undermine the integrity of Alaska's election or the will of its voters." President Donald Trump also weighed in on Truth Social, writing that "we are looking at powerful legal options to remove the fraudulent Dan J. Sullivan Jr. from the Ballot."
Alaska's Division of Elections initially rejected Daniel J. Sullivan's candidacy on the grounds it would confuse voters, but the Alaska Supreme Court ordered him onto the ballot in June, ruling he had a right to run. Sullivan, a former member of the Alaska Independence Party, said he entered the race because he was disappointed in Senator Sullivan's performance. The campaign of Democratic candidate Mary Peltola has denied any involvement in his run.
Alaska uses ranked-choice voting, and the lawsuit acknowledges "there is a realistic chance" that the same-name candidate could change the outcome. Under the requested relief, certification would be halted only if the incumbent loses and the ranked-choice tally would have favoured him had all votes for Daniel J. Sullivan gone to the senator instead. The race is among those closely watched as a potential test of Democratic gains in Republican-leaning states, and its outcome could affect control of Congress.