Ohio constitution
Article II: legislative
Section 4

No member of the General Assembly shall, during
the term for which he was elected, unless during
such term he resigns therefrom, hold any public office
under the United States, or this state, or a political subdivision
thereof; but this provision does not extend to
officers of a political party, notaries public, or officers
of the militia or of the United States armed forces.
No member of the General Assembly shall, during
the term for which he was elected, or for one year
thereafter, be appointed to any public office under this
state, which office was created or the compensation
of which was increased, during the term for which he
was elected.