I could see NH behaving a lot like Colorado if Hillary runs. NH was well right of the nation in 1992.
Talk about missing the context - it was a solidly Republican state until '92. Arguably the only reason Clinton edged it was because he personally played well there (it's where "the Comeback Kid" comes from). He won it by a decent margin in '96, and Hillary won the primary.
The only other Dartmouth poll I found on here was from April '12 and had Romney +2 when similarly-timed polling had Obama up by high single-digits or more. And having both candidates in the thirties is just not realistic unless Perot's running again.