On the day and during the hours specified in the resolution for a referendum, the charter amendment shall be submitted to the qualified voters. Except as otherwise provided in this subtitle, the referendum shall be conducted generally according to the procedures for regular municipal elections. The official who conducts the regular municipal election shall perform the same duties for the referendum. The municipality shall pay for the referendum. Promptly after the canvas is complete, the official who conducts the referendum shall certify the results to the chief executive officer of the municipality. Within 10 days after receiving the certification: if a majority of those who voted on the question voted for the proposed charter amendment: the chief executive officer of the municipality publicly shall so proclaim; and on the 30th day after the public proclamation, the charter amendment shall become part of the municipal charter; or if less than a majority of those who voted on the question voted for the proposed charter amendment: the chief executive officer of the municipality publicly shall so proclaim; and the proclamation shall state that the charter amendment is not approved.