The Sanders campaign unsuccessfully sought to have Frank removed from the rules committee in 2016, describing him as an “aggressive attack surrogate for the Clinton campaign.”

And Podesta, a longtime Washington political consultant and Clinton confidant, is viewed with contempt by some on the left. One of Podesta’s hacked emails from 2016 showed him asking a Democratic strategist where to “stick the knife in” Sanders, who lost the nomination to Clinton that year after a divisive primary contest.