Indiana Code Title 3. Elections § 3-10-1-27

Sec. 27. If electronic voting systems are used in a precinct, one (1) of the poll clerks shall give a printed political party identification card to a voter after the voter signs the poll list.  Before entering the voting booth, the voter must give the party identification card to a judge, and the judge shall set or have the electronic voting system set to allow the voter to vote only for the candidates of the voter's party.  After the system is set, the voter may register a vote upon it within the time provided under IC 3-11-14-26.