Republican U.S. Sen. Dan Sullivan and Democratic U.S. Senate candidate Mary Peltola participate in a debate in Anchorage, Alaska, Oct. 15, 2026.

Kerry Tasker | Reuters

The Department of Justice on Thursday escalated its lawsuit targeting potential certification of the result of Alaska's Senate election, which it argues could be tainted by the candidacy of a man with the same name as incumbent Republican Sen. Dan Sullivan.

The DOJ filed an amended version of its original complaint to add a new legal claim and to add details from Wednesday's New York Times article detailing alleged efforts by the people in the campaign of Democratic nominee Mary Peltola to recruit a retired schoolteacher named Dan J.…