The red flag that led to Graham Platner’s collapse was hiding in plain sight. For months, a 2024 Facebook post cautioning women against dating Platner, the Democratic nominee for the Senate in Maine, had been circulating among the political class in the state and in Washington, D.C. The post was written by one of Platner’s former romantic partners, and her name was attached. It was one of many signs overlooked by a set of upstart political activists who recruited Platner and ran his campaign. They had set out to prove that they knew better than Democratic leaders how to win…