The referendum shall apply to all ordinances passed by the council, except ordinances fixing the rate of taxation on property each year for municipal purposes, making the annual appropriation, calling a special election, or ordering improvements initiated by petition and to be paid for by special assessments. If at any time within thirty days after the final passage of an ordinance to which the referendum is applicable, a petition signed by registered electors equal in number to at least ten (10) percent of the total vote cast in the last regular municipal election is presented to the council protesting any ordinance, the same shall thereupon be suspended and the council shall reconsider such ordinance; and if the same be not entirely repealed, shall submit the same to a vote of the registered electors of the city in a manner as provided in respect to the initiative at the next regular municipal election, or at a special election called therefor. Such ordinance shall then go into effect if a majority of the qualified electors voting thereon vote in favor thereof, without further publication. The council, on its own motion, shall have the power to submit at a regular or special election any proposed ordinance to a vote of the people in manner as in this Charter provided. If provisions of two or more proposed ordinances adopted or approved at the same election conflict, the ordinance receiving the highest affirmative vote shall become effective. (Ord. No. 87-202, § 27, 11-3-1987; Ord. No. 91-47, § 1, 11-13-1991)