1. When an initiative or referendum petition has been finally determined sufficient, the council shall promptly consider the proposed initiative ordinance in the manner provided by law for the consideration of ordinances generally or reconsider the referred ordinance by voting its repeal. If, within 30 days after the date the petition was finally determined sufficient, the council fails to adopt the proposed initiative ordinance without any change in substance or fails to repeal the referred ordinance, the council shall submit the proposed or referred ordinance to the registered voters of the city.
2. The vote of the city on the proposed or referred ordinance must be held at the next general city election or general election. Copies of the proposed or referred ordinance must be made available at the polls.
3. An initiative or referendum petition may be withdrawn at any time before the 30th day preceding the day scheduled for a vote of the city or the deadline for placing questions on the ballot, whichever is earlier, by filing with the city clerk a request for withdrawal signed by at least four members of the petitioners’ original committee. Upon the filing of that request, the petition has no further effect and all proceedings thereon must be terminated.