Indiana Code Title 3. Elections § 3-8-4-3

Sec. 3. (a) This section applies to each political party that elects delegates to the party's state convention at a primary election.

(b) Delegates to a state convention shall be chosen at the primary election conducted by the political party on the first Tuesday after the first Monday in May 2016 and every two (2) years thereafter.  If provided in the rules of the state committee of the political party, delegates may be elected from delegate districts in each county.

(c) Not later than noon November 30 of the year preceding the year in which the state convention is to be conducted, the state chairman of a political party shall certify the following to the election division and to each county committee of the party:

(d) The county committee shall establish any delegate districts required to be established under subsection (c) and file descriptions setting forth the district boundaries with the county election board not later than noon December 31 of the year preceding the year the state convention is to be conducted.  If the county committee does not timely file district descriptions under this subsection, the county election board shall establish districts not later than the first day that a declaration of candidacy may be filed under IC 3-8-2-4, and apportion the delegates to be elected from each district in accordance with subsection (c).