Even Graham Platner’s volunteers are reportedly closing the chapter on the politically troubled Maine Democratic Senate candidate. A damning new rape allegation emerged against Platner Monday evening, marring the Maine oyster farmer’s candidacy and prompting a slew of progressive lawmakers to revoke their endorsements of the firebrand. It was, apparently, the final straw for Platner’s team, who had largely stayed by his side through previous controversies, including the uproar over his Nazi-them