Idaho Code § 34-1102: Changing polling place — Proclamation and notice.

Whenever it shall become impossible or inconvenient to hold an election at the place designated therefor, the judges of election, after assembling and before receiving any vote, may adjourn to the nearest convenient place for holding the election, and at such adjourned place forthwith proceed with the election and the county clerk shall be notified of the change.

Upon adjourning any election, the judges shall cause proclamation thereof to be made, and shall post a notice upon the place where the adjournment was made from notifying electors of the change of polling place.