A Rasmussen tracking poll on Monday in North Carolina found Obama had a 14% lead over Clinton. A Tuesday NC poll by Insider Advantage found a 2% lead for Clinton.
Despite all that has happened this week, I doubt that both of these polls are right. But things are probably quite fluid in NC.
Given how far behind Clinton is in the delegate count, I think that she must beat Obama in both NC and Indiana to have a non-trivial chance of winning the nomination.