trump. when donald trump sort of sets up this contrast, he's been calling him sleepy joe for a long time. these sorts of comments from former vice president biden really do feed into that kind of criticism. he may have a case where a couple months from now, democratic voters are looking at a field with a lot of people that they know more about than they do now and they say, does it have to be joe biden? is he the only electable one? does he have a lot of weaknesses against president trump that maybe we need to take into consideration. >> dana: we'll see. nate silver, the guru on politics, he said it's not that complicated folks, biden will lose the nomination if and when democrats become convinced that democrats can't beat trump. collin, i take your point that joe biden isn't firing on all cylinders right now in the campaign. is anybody else looking like they can possibly surpass him? >> one thing that i'm interested to watch is what happens when either senator sanders or