@inquiline @tillshadeisgone ah, I see what you mean. I was getting more at, "is the Biden-but-not-Harris group big enough that it made a difference in the election?" and "is 600 people a big enough sample size to be representative of *everyone* who voted for Biden but not Harris?" (I don't really know much about polling.)
My thought is that the party leadership might well make, or have made, a calculated decision to alienate some voters in order to appeal to others.