Idaho Admin. Code r. 09.05.03.012
Once the contract becomes effective as a bar to an election, no petition will be accepted until the end of the period during which the contract is effective as a bar. A contract for a fixed period of more than three (3) years will bar an election sought by a contracting party during the life of the contract, but will act as a bar to an election sought by an outside party for only three (3) years following its effective date. A contract of no fixed period will not act as a bar at all. Petitions filed not more than ninety (90) days but over sixty (60) days before the end of the contract bar period will be accepted and can bring about an election, or if a petition is filed after a contract expires it will be accepted. The last sixty (60) days of the contract bar period is called an insulated period. During that time the parties to the existing contract are free to negotiate a new contract or to agree to extend the old one. If they do so, petitions will not be accepted until ninety (90) days before the end of the new contract bar period.
Idaho Admin. Code r. 09.05.03.012