No additional signatures shall be collected or submitted to the secretary of state by the committee interested in the petition, or by any person acting on behalf of the committee, during the period beginning on the date that the petition is initially submitted to the secretary of state and ending on the date that the secretary of state notifies the chairperson of the committee that the petition has an insufficient number of valid signatures. If the committee, or any person acting on behalf of the committee, submits additional signatures, the signatures must be on the form provided by the secretary of state under this division and only signatures that were signed and collected during the ten-day period to collect and submit additional signatures may be submitted.
If additional signatures are filed, the secretary of state shall determine the sufficiency of those additional signatures not later than sixty-five days before the election. The part-petitions of the supplementary petition that appear to the secretary of state to be properly verified, upon their receipt by the secretary of state, shall forthwith be forwarded to the boards of the several counties together with the part-petitions of the original petition that have been properly verified. They shall be immediately examined and passed upon as to the validity and sufficiency of the signatures on them by each of the boards and returned within eight days to the secretary of state with the report of each board. No signature on a supplementary part-petition that is the same as a signature on an original part-petition shall be counted. The number of signatures in both the original and supplementary petitions, properly verified, shall be used by the secretary of state in determining the total number of signatures to the petition that the secretary of state shall record and announce. If they are sufficient, the amendment, proposed law, or law shall be placed on the ballot as required by law. If the petition is found insufficient, the secretary of state shall notify the committee in charge of the circulation of the petition.
R.C. § 3519.16