Members of the Democratic Socialists of America circulated a letter calling on candidates and elected officials to refuse to work with the consultants who handled Graham Platner’s campaign, according to screenshots of the letter shared with The Intercept.

“We, the undersigned, call on DSA candidates and elected officials to no longer contract or work with Morris Katz or Fight Agency, his political consulting firm,” the letter reads. Katz is not a member of DSA.

The letter also noted consultants at the agency like Rebecca Katz, who is not related to Morris, were also behind the campaign of Sen. John Fetterman, D-Pa., and said they continued to advise him even after he made a hard-right turn after entering the Senate.

“Morris Katz is one of the chief parties responsible for the catastrophic campaign of scandal-ridden Maine Senate candidate Graham Platner,” the letter says. “Billed as a top adviser to the campaign, Katz helped recruit Platner and supercharged his candidacy with slick video production, friendly media placements, and political connections.”