Indiana Code Title 3. Elections § 3-10-1-13

Sec. 13. (a) The primary election paper ballots, ballot cards, and ballot labels on an electronic voting system of each political party must be of uniform size and of the same quality paper as the paper ballots, ballot cards, and ballot labels used at the general election.

(b) The primary election paper ballots and ballot cards of a political party used in a precinct must contain the precinct number or designation on the ballot.

(c) The paper ballots and ballot cards must be distinctively marked or be of a different color so that the ballots of each party are easily distinguishable.

(d) This subsection applies to all voting systems.  All the candidates representing one (1) party shall be placed on one (1) ticket with the name of the party placed at the top or beginning of the ballot in the form prescribed by section 19 of this chapter.