N.H. Rev. Stat. Ann. § 659:38

No person shall forge or falsely make the official endorsement on any official ballot, or furnish to any voter a ballot with the intent that such voter shall use the same in voting instead of the ballot given him by the ballot clerk, or take or remove any ballot outside the guardrail before the close of the polls, or knowingly delay the delivery of any ballots. Whoever knowingly violates this provision shall be guilty of a misdemeanor if a natural person or guilty of a felony if any other person.