Colorado constitution
Article XXIX
Section 2

(6) "Public officer" means any elected officer, including all statewide elected officeholders, the head of any department of the executive branch, and elected and appointed members of state boards and commissions. "Public officer" does not include a member of the general assembly, a member of the judiciary, any local government official, or any member of a board, commission, council or committee who receives no compensation other than a per diem allowance or necessary and reasonable expenses.