ELLSWORTH, Maine (AP) — In another world, revelations of problematic social media posts, a tattoo closely resembling a Nazi symbol and a sudden turnover in campaign staffers would have been enough to sink any political candidate. But Graham Platner, a Democrat looking to flip a Maine U.S. Senate seat in a key 2026 contest, isn’t stepping aside. A plain-speaking oyster farmer and combat veteran, Platner has been open about mistakes he says he made in the past and his struggles with post-traumatic stress disorder. He believes voters want to see new Democratic faces who will fight for them, and he’s...