Ohio Rev. Code § 3505.30
When the results of the ballots have been ascertained, such results shall be embodied in a summary statement to be prepared by the precinct election officials in duplicate, on forms provided by the board of elections. One copy shall be certified by the precinct election officials and posted on the front of the polling place, and one copy, similarly certified, shall be transmitted without delay to the board in a sealed envelope along with the other returns of the election. The board shall, immediately upon receipt of such summary statements, compile and prepare an unofficial count and upon its completion shall transmit prepaid, immediately by telephone, facsimile machine, or other telecommunications device, the results of such unofficial count to the secretary of state, or to the board of the most populous county of the district which is authorized to canvass the returns. Such count, in no event, shall be made later than twelve noon on the day following the election. The board shall also, at the same time, certify the results thereof to the secretary of state by certified mail. The board shall remain in session from the time of the opening of the polls, continuously, until the results of the election are received from every precinct in the county and such results are communicated to the secretary of state.
R.C. § 3505.30