Transcript for Elizabeth Warren climbs in new Iowa poll
And now to a shakeup in the race for 2020. A new poll showing there may be a new democratic front-runner. For the first time, Elizabeth Warren just edging out Joe Biden. Her opponents sharpening their attacks. But that poll also showing that Democrats in Iowa are still open to changing their minds. As some candidates could soon be leaving the race. Here's Rachel Scott. Reporter: Tonight, senator Elizabeth Warren riding a wave of momentum in Iowa. I'm looking for every vote in Iowa. Reporter: That new poll of state voters shows a surging Warren now neck and neck with former vice president Joe Biden. And senator Bernie Sanders, who lost here by a razor-thin margin in 2016, falling behind. Our data shows us a very different situation than that poll reflected. But bottom line is, I think we're gonna win here in Iowa. What this is about is about a message. Reporter: But here in Iowa competitors taking aim at that message. Mayor Pete buttigieg criticizing Warren for refusing to acknowledge if her medicare for all policy would lead to tax increases. If a plan is gonna raise middle class taxes, you ought to say so and then explain why you think that's a good idea anyway. Reporter: The democratic candidates rallying here at the steak fry in Des Moines, a hawkeye tradition. It has been from day one about investing in Iowa. The state is so important for so many reasons. Reporter: According to that new poll, just 1 in 5 likely democratic caucus-goers say their minds are made up, while 63% say they could still be persuaded to support a different candidate. Some voters we spoke with say they welcome a narrowing field. I think it's time. We have to narrow it down. It makes it so difficult when there's so many to choose from. Reporter: Parading with very vocal supporters, senator Cory booker doing a gut check about his presidential prospects, now giving himself until October to raise enough money to keep his campaign alive. We need $1.7 million before the end of the month to continue in it. Rachel, joining us from the campaign trail. The third fund-raising quarter ends at the end of this month. Senator booker telling you the future of his campaign depends on his fund-raising? Reporter: That's right. He put out a fund-raising email out, saying if he doesn't get that $1.7 million in just about a week, he's out. His campaign raised about $300,000 since, but that's only a small fraction of what he needs. Rachel, thank you.
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