But the polling still shows Biden and Bernie being the best general election nominees.
They both win 270 electoral votes.
Warren's weaker polling is actually due to lower name ID than Bernie and Biden.
But the favorable and unfavorable numbers have gone down for all of them. Of course, Trump is still worse than everyone running but that's how it was in 2016.
Trump is going to do his best to drag whoever the nominee is to Hillary levels of favorable//unfavorable.
Unfortunately he's good at that type of thing and I'm sure the media (and Twitter) will help.