Iowa Code § 50.14: Return of results.

When election results are delivered in person to the commissioner who is conducting the election, the printed results and memory device of the voting equipment shall be returned to the commissioner on election night by two precinct election officials who shall be of different political parties in the case of a partisan election, or by a person designated by the commissioner, including but not limited to a state or local law enforcement officer. The printed results and memory device shall be returned in a securely sealed envelope with the signatures of all board members of the precinct placed across the seal so that the envelope cannot be opened without breaking the seal.