Ohio constitution
Article II: legislative
Section 27

The election and appointment of all officers, and
the filling of all vacancies, not otherwise provided for
by this constitution, or the constitution of the United
States, shall be made in such manner as may be directed
by law; but no appointing power shall be exercised
by the General Assembly, except as prescribed in this
constitution; and in these cases, the vote shall be taken
“viva voce.