choice. >>> welcome back. with just three days to go until all the top democratic presidential contenders meet on one debate stage, new polls show

presidential contenders meet on one debate stage, new polls show the primary fight is a three-way race at the top between joe biden, bernie sanders and elizabeth warren, who is solidifying her place as a top contender, attracting massive crowds at campaign stops across the country including over the weekend at the new hampshire democratic state convention where warren was a huge hit with the audience, the massachusetts senator receiving a nearly two-minute standing ovation. joining me is steve kornacki at the big board. take us through some of these new polls that we're seeing, especially with this momentum from elizabeth warren. >> the candidates were busy this weekend. the pollsters were busy this weekend. a bunch of new polling data we can take you through. here's a new national poll from abc news and the "washington post." again, joe biden continuing to lead this race again. we've seen this high 20s, low 30s. he's been consistently in front of this race, but not exactly running...