preston. >> warren took that on. she's not afraid of fighting and conflict. >> she has been carefully orchestrating her campaign to not respond to these daily tiffs and in the to and fro of the campaign. she said i'm tired of this calling women angry eluding to another word that the vice president used last week. i think we're in a new phase in this battle between warren and biden specifically where over the last week to ten days we have seen them ratchet up and not be afraid to really much more sharply draw the contrast with each other. it's a new phase in their relationship on the trail.