NH is a swing state in the sense that it has voted for the eventual winner in 8 out of the last 10 elections. So does it swing to a winner or make a winner? With Romney a close neighbor I’d bet it goes R this year which looks like another swing to the winner year to me.
In the 1936 landslide, when Alf Landon carried only two states, Maine and Vermont, I think he lost New Hampshire by only a very narrow margin. He could have swept northern New England!