elizabeth warren they found among democratic voters to be the most popular candidate, and popular in terms of the favorable rating. biden's negatives have risen. where the horse race stands, seems biden has taken hits among some democratic voters. negatives have gone up a bit? >> the biden campaign forcefully pushing back on this monmouth poll saying it's an outlier, looking at the small sample size, pointing out in august it's a dead period for polling to begin with. this was conducted over a summer weekend. you're not going to get the kind of response rate you like. but they also think that the fundamentals, the theory of the case for them is really still strong, that the number one issue for democratic voters continues to be donald trump and who is the best candidate to beat donald trump. they still believe and voters do show so far in these pollings that they think joe biden is that candidate. the risk of this electability focus strategy is i see supposes