I keep a few leftist friends around on Facebook to try to get an idea of what they are thinking. Not one of them has said anything pro Biden in months. By April/May of this year they started talking a lot less about politics and by mid to late summer pretended they never discussed politics in the past with their Facebook newsfeed used to be filled with posts about how great basin is and how awful Trump is.
That is very telling to me.
I was reading a popular blog the other day and Biden was getting a lashing from the posters. What was interesting was the sparsity of excuses and defense of Biden. Very little in the way of retorts from the usual defenders. Its becoming a lot harder for them to defend the indefensible.