Vacancies that occur during the ten (10) day period before a primary election, or after the primary election but at least ten (10) days before the general election in the slate of candidates of any political party, except candidates for precinct committeeman, shall be filled in the following manner:
The county and legislative district central committee shall fill the vacancy within fifteen (15) days from the date the vacancy occurred. The state central committee shall fill the vacancy within thirty (30) days from the date the vacancy occurred.
Any political party candidate so appointed by the proper central committee must, in order to have his name on the general ballot, file a declaration of candidacy and pay the required filing fee.
Vacancies that occur in a slate of candidates for precinct committeeman within ten (10) days prior to the primary election shall not be filled.
Idaho Code § 34-715