(1) Each petition presented for signature must be identical to the petition authorized for circulation by the city clerk pursuant to section 18-2512.
(2) Every petition shall contain the name and place of residence of not more than three persons as chief petitioners or sponsors of the measure. The chief petitioners or sponsors shall be qualified electors of the municipal subdivision potentially affected by the initiative or referendum proposal.
(3) Every petition shall contain the caption and the statement specified in subdivisions (1)(a) and (1)(c) of section 18-2513.
(4) When a special election is being requested, such fact shall be stated on every petition.