Newcomer Sullivan’s candidacy has injected controversy into one of the Democrats’ top Senate targets of 2026, where former Rep. Mary Peltola is mounting a well-funded challenge against Sen. Sullivan as Democrats look for paths to reclaim the Senate majority.Dan J. Sullivan, who is not related to the senator, entered the race on May 29. In a complaint filed with the FEC, the NRSC alleges he and Democratic consultant Amber Lee coordinated “a scheme to launch a U.S. Senate candidacy” that violates federal prohibitions on fraudulent misrepresentation.

According to the complaint, the challenger has no history of Republican Party registration and has previously donated to Democratic candidates, including Peltola. The NRSC also argues that his campaign branding closely resembles the incumbent senator’s, citing similar colors, typography, imagery, and use of the Sullivan name and Alaska North Star logo.

The complaint further points to the involvement of Lee, a Democratic strategist whose firm has worked with progressive causes and has received payments from a political action committee that has supported Peltola. The NRSC alleges her role in producing campaign materials for the challenger demonstrates an effort to confuse voters and benefit Democrats in the race.