Let me just note that simply because Hillary Clinton is hopelessly far behind in North Carolina doesn't mean that Indiana is the only May 6 primary that matters. Insofar as the remaining contests matter at all, they all matter. The Clinton campaign did a good job of making the contests Obama won between March 4 and Pennsylvania go down the memory hole, so that I heard TV people talking about Clinton having a streak (her actual streak as of today is one win!) but she doesn't get to arbitrarily decided which states matter.