N.H. Rev. Stat. Ann. § 655:8

To hold the office of state representative, a person must be at least 18 years of age and must be qualified as provided in Part 2, Article 14 of the state constitution: for 2 years, at least, next preceding the election shall have been an inhabitant of this state; and shall be, at the time of the election, an inhabitant of the town, ward, place, or district he or she may be chosen to represent, and shall cease to represent such town, ward, place, or district immediately on his or her ceasing to be qualified as aforesaid.