Ohio constitution
Article X: county and township organizations
Section 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.