§ 31.051 REFERENDUM PETITIONS.
   (A)   Any ordinance or other measure passed by Council shall be subject to the referendum except as provided in § 31.052. No ordinance or other measure shall go into effect until 30 days after it is passed by Council, except as provided in § 31.052.
   (B)   When a petition, signed by 10% of the number of electors who voted for Governor at the most recent general election for the office of Governor in the municipality, is filed with the Fiscal Officer within 30 days after any ordinance or other measure is filed with the Mayor or passed by Council, or, if the Mayor has vetoed the ordinance or any measure and returned it to Council, the petition may be filed within 30 days after Council has passed the ordinance or measure over the veto, ordering that the ordinance or measure be submitted to the electors of the municipality for their approval or rejection, the Fiscal Officer shall, after ten days, and not later than 4:00 p.m. of the ninetieth day before the day of election, transmit a certified copy of the text of the ordinance or measure to the Board of Elections. The Fiscal Officer shall transmit the petition to the Board, together with the certified copy of the ordinance or measure. The Board shall examine all signatures on the petition to determine the number of electors of the municipality who signed the petition. The Board shall return the petition to the Fiscal Officer within ten days after receiving it, together with a statement attesting to the number of the electors who signed the petition. The Board shall submit the ordinance or measure to the electors of the municipality, for their approval or rejection, at the next general election occurring subsequent to 90 days after the Fiscal Officer certifies the sufficiency and validity of the petition to the Board.
   (C)   No such ordinance or measure shall go into effect until approved by the majority of those voting upon it. Sections 31.050 through 31.061 do not prevent the municipality, after the passage of any ordinance or other measure, from proceeding at once to give any notice or make any publication required by the ordinance or other measure.
   (D)   As used in this section, CERTIFIED COPY means a copy containing a written statement attesting that it is a true and exact reproduction of the original ordinance or other measure.
(R.C. § 731.29)