Ohio Rev. Code § 319.02
Except as otherwise provided in section 3.061 of the Revised Code, before entering upon the discharge of the duties of office, the county auditor shall give a bond signed by a bonding or surety company authorized to do business in this state and to be approved by the board of county commissioners, or, at the auditor's option, by two or more freeholders having real estate in the value of double the amount of the bond over and above all encumbrances to the state, in a sum of not less than five thousand nor more than twenty thousand dollars, as the board requires, conditioned for the faithful discharge of the duties of office. The expense or premium for such bond shall be paid by the board and charged to the general fund of the county. Such bond, with the oath of office required by sections 3.22 and 3.23 of the General Code, and Section 7 of Article XV, Ohio Constitution, and the approval of the board indorsed upon it shall be deposited by such board with the county treasurer, who shall record and carefully preserve it.
If an auditor-elect fails to give bond and take the oath of office, as required by this section, on or before the day on which the auditor is required to take office, such office shall become vacant.
R.C. § 319.02