Adam Green, the co-founder of the PCCC, a Washington-based organization that has partnered with Warren since she entered politics as a 2012 Senate candidate, said that their “Switch to Warren” push will focus in large part on Biden supporters concerned most about nominating the candidate best positioned to defeat President Trump.

“They don’t need an excuse,” Green said of Biden voters, citing Warren’s recent rise in the polls. “The moment they get a sense that he’s not the best to go against Trump, they won’t need any further permission to leave Biden for somebody else.”

“These people are ready to bolt.”…

“People think Warren’s challenge is how to take a bunch of Bernie supporters,” Green said of the other leading progressive in the race. “The two big honeypots for Warren are actually Biden supporters and undecided voters, all of whom are electability voters looking to go with somebody who can inspire voters in the general election.”