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

Elections for state and county officers shall be held on the first Tuesday after the first Monday in November in even numbered years;  and all elections for all other elective officers shall be held on the first Tuesday after the first Monday in November in the odd numbered years.

The term of office of all elective county, township, municipal, and school officers shall be such even number of years not exceeding four as may be prescribed by law or such even number of years as may be provided in municipal or county charters.

The term of office of all judges shall be as provided in Article IV of this constitution or, if not so provided, an even number of years not exceeding six as provided by law.

The general assembly may extend existing terms of office as to effect the purpose of this section.