A bombshell rape allegation has thrown Maine Senate candidate Graham Platner’s campaign into turmoil, but some of his most progressive supporters in Congress are standing by him.At least three Democratic lawmakers — Sens. Bernie Sanders, I‑Vt., Chris Murphy, D‑Conn., and Chris Van Hollen, D‑Md. — have yet to withdraw their support or call on Platner to end his campaign after Maine resident Jenny Racicot, 41, accused him of rape in interviews with Politico and CNN.Asked by Fox News Digital about Racicot’s allegation that Platner in 2021 barged into her home while intoxicated and forced her to have unprotected sex, none of the lawmakers responded by publication time.The muted response marks the latest sign that some progressives are sticking with Platner despite mounting scandals threatening the viability of his Senate bid.DEMOCRATS BREAK WITH SCANDAL-PLAGUED GRAHAM PLATNE …