The Council shall either pass such proposed ordinance without alteration within thirty (30) days after the sufficiency of the petition has been determined and certified to it; or, within thirty days after such certification the Council shall call a special election, unless a general or regular primary election shall be held within six months thereafter, and at such special, primary, or general election such proposed ordinance shall be submitted without alteration to a vote of the electors of the City.
If a majority of the qualified electors voting on the proposed ordinance shall vote in favor thereof it shall thereupon become a valid and binding ordinance of the City. If the provisions of two or more ordinances adopted at the same election conflict the ordinance receiving the largest affirmative vote shall prevail. Any number of proposed ordinances may be voted upon at the same election and all such elections shall be held and the result determined in accordance with general law, provided that there shall not be more than one special election for such purpose in any period of one year.