there was a libertarian takeover project to use NH as a sort of libertarian exclave. NH also hosts the Porcupine Freedom Festival, which is like a summer camp for libertarians where you pay for booze and wares with slivers of gold. Planet Money has a great episode about it.

it's not like a majority of NH is libertarian, it's just the highest concentration of libertarians. and subjectively the vibes are real different from VT.