Amendments to the Constitution of this State may be proposed by joint resolution in either house of the General Assembly, and if the same shall be voted for by 3/5 of all the members elected to each of the 2 houses in the manner provided by Section 2 of Article XIV of the Constitution, the amendment or amendments proposed shall be submitted to the electors of this State for adoption or rejection in the manner hereinafter provided.
5 ILCS 20/1