Constitution of the State of Ohio Art. X, § 1

The general assembly shall provide by general law for the organization and government of counties, and may provide by general law alternative forms of county government. No alternative form shall become operative in any county until submitted to the electors thereof and approved by a majority of those voting thereon under regulations provided by law. Municipalities and townships shall have authority, with the consent of the county, to transfer to the county any of their powers or to revoke the transfer of any such power, under regulations provided by general law, but the rights of initiative and referendum shall be secured to the people of such municipalities or townships in respect of every measure making or revoking such transfer, and to the people of such county in respect of every measure giving or withdrawing such consent.