Sanders, one of Platner’s earliest and most influential backers, is latest to call on him to withdraw from Maine race

The progressive senator Bernie Sanders called on Graham Platner to withdraw from the US Senate race in Maine, citing “very serious allegations” of sexual assault, hours before the embattled nominee faced another claim of sexual misconduct.

While Platner has denied the new allegations, reported by Politico, and later by the Washington Post, the initial report prompted a wave of prominent Democrats to urge him to stand aside as the party’s nominee in the consequential Senate contest.