Don't attack Biden. Flatter him.
Say that you wish he was at the top of the ticket instead of the bottom. Say that would have reassured you. Say that Biden has a gravitas Obama didn't have on his own.
Say that Obama is implicitly admitting that experience does matter after all.
And get some intrepid beat reporter to ask Joe Biden if he truly thinks Obama is more qualified to be President than he is.
Then run an ad that shows clips of Biden saying Obama isn't up to the job (There are plenty out there) and saying good things about McCain (There are some out there).
In the VP debates, don't touch Biden. Just point out how much smarter Biden is than Obama, how much more knowledgeable he is. Then point out that if you want someone in the top job who is as ready as Joe Biden you have to vote for John McCain.
Remember, this race isn't about Joe Biden. It's about Obama and McCain first and foremost. Use Biden to make McCain look good and Obama look like a lightweight.
And whatever you do, don't pick Tim Pawlenty.
The best running mate to combat Biden is Ridge... on many levels.
In that he appeals to the same Philly suburb voters that Biden might appeal to? I suppose. But nature abhors a vacuum. With Biden on the ticket, does it make more sense to try and grab votes in an area Biden doesn't help with?
Liberman to win independents, Jews, and moderate Democrats?
Romney for his family name in Michigan?
Palin to close the gender gap nationwide?
Portman for Ohio?
Then there's the slight matter of making Ridge, a backer of the nuclear freeze and author of the color coded homeland security alerts, the heir apparent. I'm not high on Ridge.
It should be down to Palin, Lieberman, and Portman in that order.