The Republican Susan Collins has held one of Maine’s Senate seats for nearly thirty years, and Democrats, in trying to take it away from her, have a lot at stake. Graham Platner, a combat veteran, political activist, and small-business owner who has never served in office, seemed to check many boxes for a progressive upstart. Platner, who says he and his wife earn sixty thousand dollars a year, has spoken passionately about affordability, and has called universal health care a  “moral imperative.” He seemed like a rising star, but then some of his past comments online directed against police, L.G.B.T.Q. people, sexual-assault survivors, Black people, and rural whites surfaced. A photo was published of a tattoo that he got in the Marines, which resembles a Nazi symbol, though Platner says he didn’t realize it. He apologized, but will Democrats embrace him, despite ugly views in his past? “As uncomfortable as it is, and personally unenjoyable, to have to talk about stupid things I said on the internet,” he told David Remnick, “it also allows me to publicly model something I think is really important. . . . You can change your language, change the way you think about stuff.” In fact, he frames his candidacy in a way that might appeal to disappointed Trump voters: “You should be able to be proud of the fact that you can turn into a different kind of person. You can think about the world in a different way.”

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