The Justice Department has asked a federal court to stop Alaska from certifying its U.S. Senate election if Republican incumbent Dan S. Sullivan loses under a narrow set of conditions involving a same-name candidate, an extraordinary pre-election demand that could affect control of Congress.

The 14-page court filing, submitted Thursday in Anchorage, asks a judge to block certification if Sullivan loses and a post-election inquiry concludes that votes cast for Daniel J. Sullivan Jr. would have changed the ranked-choice result had they instead gone to the incumbent. Reuters and the Associated Press independently confirmed the action Friday.

The lawsuit states the government's allegations; it is not a ruling that Daniel J. Sullivan acted fraudulently or that any votes are invalid. No judge had granted the requested relief by publication time.

What the government is asking the court to do

The complaint names Alaska, state elections director Carol Beecher, election boards and the state ballot-counting review board as defendants. It relies on the National Voter Registration Act and argues that certifying a result affected by voter confusion would violate the state's duty to protect election integrity.

The proposed trigger is highly specific. The government says certification should be halted only if the incumbent does not win and if reallocating every vote cast for Daniel J. Sullivan to the senator would produce an incumbent victory after ranked-choice tabulation. The filing then asks for an investigation into whether voters who selected the namesake intended to support the incumbent, followed by whatever additional procedures the court considers appropriate.

That requested inquiry raises an immediate practical question: secret ballots do not ordinarily reveal why a voter selected a candidate. Election-law professor Derek Muller told the Washington Post that the department's legal theory is novel and that investigating intent while preserving ballot secrecy would be difficult. He separately told AP that the statute cited by the government does not authorize the department to enjoin certification, an assessment the court has not adopted.

Two Sullivans, one ranked-choice ballot

Alaska's official candidate list places former Democratic Rep. Mary Peltola, Republican incumbent Dan S. Sullivan, Daniel J. Sullivan Jr. and Gerald Heikes in the Senate contest. The incumbent is identified as a Republican and officeholder; Daniel J. Sullivan is listed separately.

The state's elections division initially rejected Daniel J. Sullivan's candidacy after concluding that his filing was designed to confuse voters. Its June determination cited his requested ballot name, recent party affiliation and campaign presentation. A state judge reversed that decision, and the Alaska Supreme Court allowed him to remain on the ballot. Daniel J. Sullivan has denied entering the race to divert votes from the incumbent.

Under Alaska's system, voters may rank multiple candidates. If nobody wins a majority of active first-choice ballots, the lowest candidate is eliminated and those ballots transfer to the next-ranked continuing choice. That means a voter uncertain between the two Sullivans can rank both, a feature AP noted may reduce confusion. TAQ's earlier coverage explained the top-four primary and the same-name issue before the August vote.

Why the case matters nationally

The Alaska race is competitive enough that both parties view it as potentially decisive for Senate control. The complaint cites August primary figures of 49.5% for Peltola, 41.4% for the incumbent and 2.5% for Daniel J. Sullivan; the state's results portal is the official record for that primary.

The case therefore extends beyond a ballot-label dispute. The federal government is asking a court, before votes are fully cast, to establish a path for withholding certification of a federal election based on a counterfactual reconstruction of voter intent. Attorney General Todd Blanche said before the suit was filed that the department did not intend to interfere improperly with state certification, according to AP. The next consequential step will be the court's response and Alaska's defense; until then, the candidates remain on the ballot and the requested certification block is only a government claim.