Idaho Code § 61-207
Each commissioner shall devote his entire time to the duties of his office and shall, together with each person appointed to a civil executive office by the commission, before entering upon the duties of his office, take and subscribe to an oath to the effect that he will support the Constitution of the United States and the state of Idaho, and faithfully and impartially discharge the duties of his office as required by law and that he is not interested directly or indirectly in any public utility embraced within the provisions of this act; or any of its stocks, bonds, mortgages, securities or earnings.
Each commissioner shall be a qualified elector of this state, and no person while in the employ of or holding any official relation to any corporation or person, which said corporation or person is subject in whole or in part to regulation by the commission, and no person owning stocks or bonds of any such corporation or who is in any manner pecuniarily interested therein shall be appointed to or hold the office of commissioner or be appointed or employed by the commission: provided, that if such person shall become the owner of such stocks or bonds or become pecuniarily interested in such corporation otherwise than voluntarily, he shall within a reasonable time divest himself of such ownership or interest; failing to do so, his office or employment shall become vacant.
No commissioner shall, directly or indirectly, while he is a member of said commission, take any part in politics by advocating or opposing the election, appointment or nomination of any person or persons to any office in the state of Idaho, excepting under officers in the commission, nor shall any commissioner seek appointment or election or nomination for any civil office in the state of Idaho, other than commissioner, while he is a member of said commission, nor shall any commissioner seek appointment, nomination or election to any civil office in the state of Idaho, other than that of commissioner, for a period of two (2) years from the date of the expiration of his term or after his resignation or removal from said office.
Idaho Code § 61-207