From David Swerdlick, who said it before I did:
Memo to Joe Biden
By David Swerdlick | TheRoot.com
To beat Sarah Palin, keep it clean, articulate and boring.
Exactly right. No quips. No one-liners. And for God’s sake, no zingers. Just answer the questions as dully as possible. Palin will take care of herself, one way or the other, and anything Biden says about her or her qualifications can only backfire.