Maine rules
From the 128th Maine Legislature Joint Rules, Adopted December 7, 2016:
Rule 215. Actions Relating to the United States Constitution.
All memorials, resolutions, applications and petitions that relate to the Legislature's functions under the United States Constitution, Article V are in order for introduction without approval from the Legislative Council. Passage of these items must be accomplished as follows:
1. Calling of United States Constitutional Convention. An item requesting the calling of a United States Constitutional Convention requires a 2/3 vote of the members present in each chamber;
2. Ratification of Amendment. An item requesting ratification of an amendment to the United States Constitution requires a majority vote of the members present in each chamber; and
3. Any Other Action. An item requesting any other action under the United States Constitution, Article V requires a majority vote of the members present in each chamber. [1]