Iowa Code § 182.3: Notice of referendum.

1. The secretary shall give notice of the referendum on the question of whether to establish an Iowa sheep and wool promotion board and to impose the assessment by publishing the notice for a period of not less than five days in at least one newspaper of general circulation in the state. The notice shall state the voting places, period of time for voting, and other information deemed necessary by the secretary.

2. A referendum shall not be commenced until five days after the last date of publication.