Via Marc Ambinder, here's the key part of the Obama campaign's expectations-setting memo for February 5:
We fully expect Senator Clinton to earn more delegates on February 5th and also to win more states. If we were to be within 100 delegates on that day and win a number of states, we will have met our threshold for success and will be best positioned to win the nomination in the coming months.
So, unless the Obama campaign has dreadfully wrong internal polls or is just incredibly stupid (the former more plausible than the latter), look for him to finish well within 100 delegates of Hillary tomorrow. Otherwise, even by Obama's own terms, he will have lost Super Tuesday.