Transcript for Race Tightening Between Bernie Sanders and Hillary Clinton
On the democratic side tonight a decidedly different tone now from Hillary Clinton. Is it a clear sign she knows Bernie Sanders is on the move in the polls in Iowa and even nationally tonight. A new poll showing Hillary Clinton's lead over Sanders is now just seven points down from twenty points one month ago. Tonight for new argument and what the Sanders team has pulled from her past to answer back. ABC Cecilia Vega covering the campaign. With Hillary Clinton on the ropes an Iowa and New Hampshire her family now out in force bill and Chelsea. And today Hillary all over the airwaves and the target Bernie Sanders the new fight over health care senator Sanders wants to dismantle obamacare. Dismantle that chip program dismantle Medicare. I'm dismantle private insurance Sanders outraged saying his plan would do nothing of the sort that is factually incorrect. And I hope the Clinton a campaign stop saying I put this morning on GMA Clinton not backing down that's exactly what he's proposed. OK so now tell the American people how much that's gonna cost them Clinton claiming it will mean a tax hike on the middle class. But today eighteen Sanders digging into the vault releasing this 1993. Photo signed by Clinton. Baking Sanders for his commitment to real health care access for all Americans say they also sent around this 2000 an eight clip of Clinton blasting her then opponent Barack Obama since when do Democrats attack one another. I universal health care it wasn't that long ago that Sanders was a challenger the Clinton barely mentioned by name now she is not holding back attacks. And her campaign says we will see a lot more David as we inch closer to Iowa's the silliest thing.
This transcript has been automatically generated and may not be 100% accurate.