If punters are correct then Barack Obama will shortly be announcing that he has chosen Joe Biden as his VP running mate.
Implied Chance %
I think that Biden is a mistake, myself.
I'd be choosing Kathleen Sibelius.
However, the one person who really can redefine Obama's campaign is Hillary Clinton. She is disciplined, tough and would stay on-message and focused in a way that Obama seems unable to do.
2.02AM Washington DC time and Joe Biden is now $1.01, which means the cat is well and truly out of the bag. CNN has reported that the Secret Service has been sent to protect him in readiness for his ascent to Obama's running mate.