Iowa Code § 43.102: District conventions.

Each political party may hold a congressional district convention upon the call of the state party chairperson to:

1. Elect or nominate members of the party’s state central committee.

2. Make nominations to fill vacancies on the general election ballot as provided by law.

3. Transact such other business as required or permitted by the party’s state constitution or bylaws, or the rules of the convention.