Ind. Code § 3-11-10-5

Sec. 5. If a county election board unanimously finds that the signature on a ballot envelope or transmitted affidavit is not genuine, the board shall write upon the ballot envelope or transmitted affidavit the words "The county election board has questioned the genuineness of the signature of this voter.". These ballots shall be delivered to the polls on election day under section 12 of this chapter with instructions to verify the voter's signature under section 15 of this chapter.