Ohio Revised Code General Provisions § 3.15

(A) Except as otherwise provided in division (B) of this section, at all times during one's term of office:

(B) Any person who fails to meet any of the requirements of division (A) of this section that apply to the person shall forfeit the office.  Division (A) of this section applies to persons who have been either elected or appointed to an elective office.  Division (A) of this section does not apply to a member of the general assembly, to a member of a municipal legislative authority who represents a ward, or to a member of a board of education of a city school district who represents a subdistrict, during the remainder of the member's existing term of office after there is a change in the member's district's, ward's, or subdistrict's boundaries that leaves the member's permanent residence outside the district, ward, or subdistrict.