Indiana Code Title 3. Elections § 3-10-1-5

Sec. 5.  (a) Whenever there is no contest in a political party for the nomination of a candidate or candidates for an office, the party may hold a primary election for that nomination.  The appropriate election board shall certify the names of the candidates for each nomination for which there is no contest as though a primary election had been held.  However, except as provided in subsections (b) through (c), if there is a contest in any party for any nomination, the name of each candidate of each party shall be placed on the primary election ballot, whether or not the candidate is opposed.

(b) If the only contest in a political party is for the election of a precinct committeeman or a delegate to the party's state convention, the names of unopposed candidates for nomination are not required to be placed on the primary election ballot unless the appointed member of the county election board affiliated with the political party files a written request that these names be printed on the primary election ballot.

(c) The names of unopposed candidates for election as a precinct committeeman or a delegate to a political party's state convention are not required to be placed on the primary election ballot unless an appointed member of the county election board affiliated with the political party files a written request that these names be printed on the primary election ballot.

(d) If a party wants to conduct a primary under subsection (c), an appointed member of the county election board affiliated with the party must file a notice with the county election board not later than noon seven (7) days after the final date for filing a declaration of candidacy, stating that the party will hold a primary.