Clueless Commentary Alert

The thesis: "Joe Biden appeals to white working class voters, so his selection will give Obama a  bump in that demographics."

Huh?

Most Americans don't know enough about Joe Biden to know who he is. 70%. Including most Democrats, according to a CNN poll.

So we don't know who Biden will help with, or whether he'll help with anyone.

The "third senator from Pennsylvania" has to introduce himself to 48 other states.

(Confession: I've made this analytic point before, so I'm just as clueless.)