The current Constitution of the State of New Hampshire replaced the state’s constitution of 1776. It became effective June 2, 1784. The constitution consists of two parts and each part has subsections known as “articles”.
According to Part II, Article 100 of the constitution, there are two methods of proposing amendments to the constitution:
To send a proposed constitutional amendment at the biennial election, 3/5 vote of each house of the New Hampshire General Court is required. Further, a 2/3 vote of the qualified participating voters is required to adopt a new amendment
To convene a convention, a majority of qualified voters participating in an election is required. Moreover, to send a proposed constitutional amendment at the next biennial election, a 3/5 vote of the number of delegates is required. Finally, a 2/3 vote of the qualified participating voters is required to adopt a new amendment.