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Political calculations of it. they may want to know what it's all about before they stick their neck out. >> if they stick their neck out. >> if they do. if they do. >> wes, i'd love to turn the page and ask you about 2020 and the democratic field. we saw the boost that elizabeth warren got in the recent nbc/"wall street journal" poll out earlier this week. really closely trailing biden. a fox poll this morning shows her further down. she's at 16%. sanders at 18%. so if we're to look at it all in context. but the atlantic has a really interesting piece out this week. "why ex-sanders supporters...

If she were to win the iowa caucuses, these polls could change even more dramatically. >> jen, let's look at some of the numbers from this poll that david mentioned. his support from african-american democratic voters, biden's got 42. sanders is the nearest with 12, a huge gap there. if you look at support from democratic latino voters, they're backing sanders at 24%. also if you look at white democratic voters, they support warren with 23% as david mentioned. biden is there at 21. i'm wondering what you make of that breakdown, those disparities. clearly the african-american vote is critical f...

Non-college-educated white voters, less well with college-educated white voters where elizabeth warren is beating him two to one. but what really matters is what happens in these early states. and, you know, when i was in iowa a few weeks ago, what i sensed was a great deal of respect and affection for joe biden there, but not a great deal of enthusiasm. and elizabeth warren had a great deal of enthusiasm and a very strong organization. if she were to win the iowa caucuses, these polls could change even more dramatically. >> jen, let's look at some of the numbers from this poll that david ment...

>> reporter: josh alcorn is a senior adviser to the pac. >> the point is to tell a story of joe biden that people outside of delaware may not know. it's a story of his overcoming personal tragedy, gaining this enormous empathy for people who've suffered. and then it offers his hopeful vision, optimistic vision for america. >> reporter: one source close to the vice president says there will be a family conversation this weekend that could determine whether he gets in the race. but biden's pathway to victory is uncertain at best with the democratic establishment firmly behind clinton. >> boston,...

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