Politics July 07, 20264:20 PM Graham Platner at a campaign event on June 9 in Blue Hill, Maine. CJ Gunther/Getty Images Sign up for the Slatest to get the most insightful analysis, criticism, and advice out there, delivered to your inbox daily. Democrats’ brief experiment in letting their hair down and nominating a Senate candidate who makes them feel edgy has all but concluded. After a well-corroborated Politico story in which an ex claimed Platner sexually assaulted her, the party has seen enough. Democrats ranging from Chuck Schumer to Zohran Mamdani have called on Platner to drop out. Prominent early endorsers like Sens. Elizabeth Warren and Bernie Sanders have withdrawn their support and encouraged him to step aside. The national Democratic Party said it won’t invest in the race so lo