Coming off a tough week in his bid to unseat longtime Republican US Senator Susan Collins, Maine’s insurgent Democratic candidate, Graham Platner, rallied in Bar Harbor Friday night, shaking off accusations of abusive behavior toward past partners and other perceived missteps as unfortunate moments during dark times after his service in Iraq.The race is crucial to Democrats’ bid to flip the Senate. Maine voters cast their primary votes Tuesday. Friday’s appearance at the Criterion Theater was Platner’s first appearance at a major campaign rally.Three women told the the New York Times that they had volatile relationships with Platner.“Hurtful things I...