(1)    A number of electors equal to at least 15 percent of the votes cast for governor at the last general election in their city or village may sign and file a petition with the city or village clerk requesting that an attached proposed ordinance or resolution, without alteration, either be adopted by the common council or village board or be referred to a vote of the electors. The individual filing the petition on behalf of the electors shall designate in writing an individual to be notified of any insufficiency or improper form under sub. (3).

   (2)   The preparation and form of the direct legislation petition shall be governed by s. 8.40.

   (2m)   After the petition has been offered for filing, no name may be erased or removed. No signature may be considered valid or counted unless the date is less than 60 days before the date offered for filing.

   (3)   Within 15 days after the petition is filed, the clerk shall determine by careful examination whether the petition is sufficient and whether the proposed ordinance or resolution is in proper form. The clerk shall state his or her findings in a signed and dated certificate attached to the petition. If the petition is found to be insufficient or the proposed ordinance or resolution is not in proper form, the certificate shall give the particulars, stating the insufficiency or improper form. The petition may be amended to correct any insufficiency or the proposed ordinance or resolution may be put in proper form within 10 days following the affixing of the original certificate and notification of the individual designated under sub. (1). When the original or amended petition is found to be sufficient and the original or amended ordinance or resolution is in proper form, the clerk shall so state on the attached certificate and forward it to the common council or village board immediately.

   (4)   The common council or village board shall, without alteration, either pass the ordinance or resolution within 30 days following the date of the clerk’s final certificate, or submit it to the electors at the next spring or general election, if the election is more than 70 days after the date of the council’s or board’s action on the petition or the expiration of the 30-day period, whichever first occurs. If there are 70 days or less before the election, the ordinance or resolution shall be voted on at the next election thereafter. The council or board by a three-fourths vote of the members-elect may order a special election for the purpose of voting on the ordinance or resolution at any time prior to the next election, but not more than one special election for direct legislation may be ordered in any 6-month period.

   (5)   The clerk shall cause notice of the ordinance or resolution that is being submitted to a vote to be given as provided in s. 10.06 (3) (f).

   (6)   The ordinance or resolution need not be printed in its entirety on the ballot, but a concise statement of its nature shall be printed together with a question permitting the elector to indicate approval or disapproval of its adoption.

   (7)   If a majority vote in favor of adoption, the proposed ordinance or resolution shall take effect upon publication under sub. (5). Publication shall be made within 10 days after the election.

   (8)   City ordinances or resolutions adopted under this section shall not be subject to the veto power of the mayor and city or village ordinances or resolutions adopted under this section shall not be repealed or amended within 2 years of adoption except by a vote of the electors. The common council or village board may submit a proposition to repeal or amend the ordinance or resolution at any election.