The Legislature may propose amendments to this Constitution. If the same be agreed to by three-fifths of the members elected to the Legislature, such proposed amendments shall be entered on the journal, with yeas and nays, and published once each week for three consecutive weeks, in at least one newspaper in each county, where a newspaper is published, immediately preceding the next election of members of the Legislature or a special election called by the vote of four-fifths of the members elected to the Legislature for the purpose of submitting such proposed amendments to the electors. At such election said amendments shall be submitted to the electors for approval or rejection upon a ballot separate from that upon which the names of candidates appear. If a majority of the electors voting on any such amendment adopt the same, it shall become a part of this Constitution, provided the votes cast in favor of such amendment shall not be less than thirty-five per cent of the total votes cast at such election. When two or more amendments are submitted at the same election, they shall be so submitted as to enable the electors to vote on each amendment separately.