could come off as arrogant and backfire. That's certainly how the media will portray it. They all know she can't win, but they want to keep this going.

Instead, Obama should stay positive. Act like the frontrunner. Attack McCain. Continue to talk policy. He should also respond quickly to Clinton attacks. He shouldn't fling mud himself, but when she tries to through something at him he needs to catch it and through it right back a lot harder.