Top Sanders adviser claims Biden's biggest weakness is 'pro-corporate policies'

A senior adviser to Bernie SandersBernie SandersDemocrats redefine center as theirs collapses Speculation swirls around whether Bloomberg will make Las Vegas debate stage Pelosi: 'I'm not counting Joe Biden out' MORE’s 2020 presidential campaign said Monday that former Vice President Joe BidenJoe BidenDemocrats redefine center as theirs collapses Speculation swirls around whether Bloomberg will make Las Vegas debate stage Pelosi: 'I'm not counting Joe Biden out' MORE’s greatest vulnerability is his “pro-corporate policies.”

“Over and over again he has supported pro-corporate policies, which hurt this working-class community,” Sanders adviser Jeff Weaver told Hill.TV during an interview on "Rising." 

Weaver pointed to Biden’s support as a senator of a 2005 bankruptcy bill and his backing of free trade deals such as the North America Free Trade Agreement (NAFTA) as two prime examples.

The Sanders adviser predicted that voters will “start to move away” from Biden over the next few months as Biden continues to roll out his campaign platform. 

“Once that is articulated more during the course of the next few months, I think you’re going to see a large number of those voters moving away from him,” Weaver told Hill.TV.

Biden's campaign didn't immediately respond to Hill.TV's request for comment.

Biden has established himself as the clear Democratic frontrunner in the crowded primary field of over two dozen candidates.

However, progressive candidates like Sanders and Sen. Elizabeth WarrenElizabeth Ann WarrenDemocrats redefine center as theirs collapses Massachusetts Democrats question deployment of Border Patrol teams to sanctuary cities Speculation swirls around whether Bloomberg will make Las Vegas debate stage MORE (D-Mass.) appear to be gaining momentum in the early voting states of Iowa and New Hampshire.

Both Sanders and Warren are competing for progressive voters, but Weaver insisted they have different political bases. He said the Sanders base is more "working class" than the Warren base. 

“Their bases really are not co-extensive. His base is much more diverse, much more working class,” Weaver said. “Her base is much more college educated and so they are not really at this point competing for the same pool of voters.”

—Tess Bonn