Obama's advisors thought Biden would be popular with working-class whites.
In what way? Biden hasn't done anything for the working class, no matter WHAT their race is. Biden's the chair of the Committee on Foreign Relations, and look at the STATE of our foreign relations! His idea of domestic policy is taking our guns and letting more babies be killed for the dead end of fetal stem cell research. He's on a list of famous plagiarists - well, ok, he and Obama plagiarism in common, too. His only contact with the "working class" might be to say something like, "So you're carpenter, huh? And what does that job entail?"
Obama's advisors are as out of touch as he is.
Plus, he's the only one vain and stupid enough to prefer being the semi-famous co-pilot of the Hindenberg than just a face in the crowd below.