electability and you are the most assured in your argument to win the race, a poll that doesn't necessarily show you winning, how problematic is this? >> i think it is problematic. this is about enthusiasm. it's why we have campaigns. people show up and not just perceive the strengths and weaknesses. it's why the debates matter as well. what elizabeth warren is showing is a couple of things. there's a lot of enthusiasm among the progressive ranks of the democratic party. a lot of sorting out that democrats are trying to do about what's a winning strategy, what kind of party it wants to be moving forward and she and bernie sanders are tapping into that. i think she's doing something pretty smart by reaching out to donors, by protecting her left flank, but also saying, look, i have campaigned for democrats across the country. i have helped democrats win. i see a future for the whole democratic party, and i think that biden has to keep showing up and do something about some of the lack of enthusiasm he