Political strategist David Plouffe, who managed President Barack Obama's campaigns, says Bernie Sanders is running a stronger campaign than Joe Biden. "Even though he's a longtime Washington figure, when he's in debates or interviews he doesn't fall into the trap of seeming like he's running for reelection of his current office. He's making a case and a very aggressive case," Plouffe said on "Salon Talks." Plouffe says he is struck by Sanders' consistency and the fact that he doesn't get ruffled.

Watch the full episode to hear more from Plouffe on how regular voters can help defeat President Trump in 2020, which he details in his new book, "A Citizen's Guide to Beating Donald Trump," available now.