N.H. Rev. Stat. § 659:20
Any voter who declares to the moderator under oath that said voter needs assistance marking his or her ballot shall, upon the voter's choice and request after the moderator has informed the voter of the accessible voting options that are available at the polling place, receive the assistance of one or both of the inspectors of election detailed for that purpose by the moderator or of a person of the voter's choice provided that the person is not the voter's employer or union official. Such person so assisting shall be sworn, shall mark the ballot as directed by said voter, and shall thereafter give no information regarding the same. Such person so assisting shall leave the space within the guardrail with the voter.
RSA 659:20
1979, 436:1. 1981, 97:1. 2004, 229:7. 2009, 139:2, eff. Aug. 28, 2009.