Illinois—­Legislature:  Two-thirds vote of one Legislature (biennial).  People:  Majority voting at the election.  Only one amendment at a time.  Same amendment only once in four years.

Indiana—­Legislature:  Majority vote of two Legislatures (biennial).  People:  Majority of voters in state.  While one amendment awaits action no other can be proposed.  No Constitutional Convention.

New Mexico—­Legislature Three-fourths vote of one Legislature (biennial).  People:  Three-fourths of those voting at election; two-thirds from each county.