Either branch of the General Assembly, at a regular session thereof, may propose amendments to this Constitution; and if the same be agreed to by a majority of all members elected to each house, such proposed amendments shall be entered on the journals with the yeas and nays, and published in at least one newspaper in each county, where a newspaper is published, for six months immediately preceding the next general election for Senators and Representatives, at which time the same shall be submitted to the electors of the State, for approval or rejection; and if a majority of the electors voting at such election adopt such amendments, the same shall become a part of this Constitution. But no more than three amendments shall be proposed or submitted at the same time. They shall be so submitted as to enable the electors to vote on each amendment separately.