Section 180.11 - Referendum and procedure therefor(1) A referendum may be held upon the issuance of such mortgage revenue certificates or debentures in the following manner: a petition shall be filed with the clerk within 30 days after the date of the first publication of the notice of the issuance of the proposed mortgage revenue certificates or debentures or after the posting of the notice, as hereinbefore provided. The petition shall contain the nature of the objection to the proposed utility or the issuance of said mortgage revenue certificates or debentures and shall be signed by 20 percent of the registered and qualified electors of said municipality. Such referendum shall be held not later than 60 days after the date of the first publication of said notice as aforesaid or the posting of such notice.(2) The aforesaid petition shall be filed with the city clerk, or the officer performing the corresponding duties, and the said clerk or officer shall ascertain immediately if the requisite number of registered and qualified electors have signed the said petition; whereupon the clerk or officer shall immediately report in writing to the mayor, or the executive officer of said municipality, and to the city council or other legislative body of the municipality, by whatever name known; whereupon a resolution or ordinance shall forthwith be enacted determining if the requisite number of registered and qualified electors have signed the petition, a resolution or ordinance shall forthwith be enacted setting forth the date upon which the referendum shall be held, appropriating sufficient funds to pay the expenses of said election, designating the places of voting and providing for the form of ballot to be used. In determining the number of registered and qualified electors for the purposes of determining the sufficiency of the petition for referendum, the city clerk, or such other officer, shall use the number of registered and qualified electors at the last municipal election held by the said municipality. All rules, regulations, ordinances or resolutions pertaining to municipal elections shall apply under the referendum herein set forth, except where the same are inconsistent with the proceedings herein authorized.s. 5, ch. 17118, 1935; CGL 1936 Supp. 3100(10); s.938, ch. 95-147.