Ohio Rev. Code Ann. § 4301.334
(A) The privilege of local option conferred by section 4301.324 of the Revised Code may be exercised if, not later than four p.m. of the ninetieth day before the day of a general or primary election, a petition and other information required by division (B) of this section are presented to the board of elections of the county in which the community facility named in the petition is located. The petition shall be signed by electors of the municipal corporation or unincorporated area of the township in which the community facility is located equal in number to at least ten per cent of the total number of votes cast in the municipal corporation or unincorporated area of the township in which the community facility is located for the office of governor at the most recent general election for that office and shall contain both of the following: