Amendments may be proposed to this Constitution by the legislature in the manner following: The proposed amendments shall be read in the house in which they originate on three several days, and, if upon the third reading three-fifths of all the members elected to that house shall vote in favor thereof, the proposed amendments shall be sent to the other house, in which they shall likewise be read on three several days, and if upon the third reading three-fifths of all of the members elected to that house shall vote in favor of the proposed amendments, the legislature shall order an election by the qualified electors of the state upon such proposed amendments, to be held either at the general election next succeeding the session of the legislature at which the amendments are proposed or upon another day appointed by the legislature, not less than three months after the final adjournment of the session of the legislature at which the amendments were proposed. Notice of such election, together with the proposed amendments, shall be given by proclamation of the governor, which shall be published in every county in such manner as the legislature shall direct, for at least four successive weeks next preceding the day appointed for such election. On the day so appointed an election shall be held for the vote of the qualified electors of the state upon the proposed amendments. If such election be held on the day of the general election, the officers of such general election shall open a poll for the vote of the qualified electors upon the proposed amendments; if it be held on a day other than that of the general election, officers for such election shall be appointed; and the election shall be held in all things in accordance with the law governing general elections. In all elections upon such proposed amendments, the votes cast thereat shall be canvassed, tabulated and returns thereof be made to the secretary of state, and counted, in the same manner as in elections for representatives in the legislature; and if it shall thereupon appear that a majority of the qualified electors who voted at such election upon the proposed amendments voted in favor of the same, such amendments shall be valid to all intents and purposes as parts of this Constitution. The result of such election shall be made known by proclamation of the governor. Representation in the legislature shall be based upon population, and such basis of representation shall not be changed by constitutional amendments.