Idaho Code § 43-1008
If within ninety (90) days of board approval of an order allowing annexation a petition signed by either ten (10) landowners or by two percent (2%) of the landowners, whichever number is greater, of the district is presented to the board which petition states that those signing request an election to approve or disapprove said annexation, then the board shall order an election be held within said district to determine whether the boundaries of the district shall be changed as mentioned in said order; and shall fix the time at which such election shall be held. Notice thereof shall be given and published, and such election shall be held, and all things pertaining thereto conducted, in the manner prescribed by this title in case of an election to determine whether bonds of the district shall be issued. The ballots cast at said election shall contain the words "For change of boundary," or "Against change of boundary," or words equivalent thereto. The notice of election shall describe the lands to be annexed to said district.
Idaho Code § 43-1008