The GE poll results show the most accurate info for Biden vs Trump, because of GOP attacks on him. [View all]
Trump and the GOP have already spent millions of dollars attacking Biden.
Trump's abused presidential power and been impeached to attack Biden.
Biden still does better against Trump than any other Democratic candidate, except in a few outlier polls (I remember one showig Buttigieg doing best against Trump).
Trump and the Republicans have, for the most part, been holding their fire against our other candidates, because they fear Biden the most.
And because of this, our candidates -- except for Biden -- are esstentially untested against Trump.
We have no real idea how well Sanders will poll against Trump, after months of negative ads and other attacks on Sanders by Trump and the GOP, highlighting both how extreme Sanders' statements and positions have been in the past, and how critical he's been of the Democratic Party.
We DO know that Biden can stand up to the onslaught, and still do better than Trump in most GE polls.