Obama-Clinton

I'm seeing Harold Ford, Jr. on television talking about how maybe an Obama-Clinton ticket would be the best way for Obama to appeal to white working class voters. I think there's no doubt that enhancing his appeal to white working class voters should be an important considering in thinking about a VP choice. But when you consider all the possibilities, does anyone seriously think that Clinton is the politician with the most appeal to white working class voters? I think the evidence is clear that she has more appeal to them than Barack Obama does but she hardly seems like the best possible choice.