Ind. Code § 3-11-10-6

Sec. 6. If a county election board is unable to unanimously determine whether the signature on a ballot envelope is genuine, the board shall write upon the ballot envelope or transmitted affidavit the words "Signature Disputed". The board then shall deliver all disputed ballot envelopes, together with any evidence of a documentary nature presented before the board, to the proper precinct at the same time that undisputed ballots are delivered.