Perhaps some citizens of NH assumed that Obama would win because of his lead in the polls, and thus did not feel a responsibility or need to vote for him, believing that he would win regardless of their input. However, NH is largely an independent state, and perhaps John McCain took votes from Obama.
And then again, perhaps the whole thing was rigged, which I do not believe is farfetched at all. In fact, in my state (Washington) there were several recounts for our most recent governor [Gregoire (D)], and a Republican was the declared winner, only to have it go into multiple recounts, where the lead flipped repeatedly, and headlines in the news airing "mail-in votes lost" and such.
And on the note of presidency, I would be very afraid if Clinton was our president, not only because she breaks down (and I'm not referring to her recent balling) and is indecisive in my opinion. And while Obama isn't necessarily all that, despite his impressive syntax, I disagree with some things, but then again, my other alternative- McCain, isn't my favorite either. However, despite my preferences, Clinton is clearly still in this race.