Montana Constitution, Article XI
Section 9. Voter review of local government. (1) The legislature shall, within four years of the ratification of this constitution, provide procedures requiring each local government unit or combination of units to review its structure and submit one alternative form of government to the qualified electors at the next general or special election.
(2) The legislature shall require an election in each local government to determine whether a local government will undertake a review procedure once every ten years after the first election. Approval by a majority of those voting in the decennial general election on the question of undertaking a local government review is necessary to mandate the election of a local government study commission. Study commission members shall be elected during any regularly scheduled election in local governments mandating their election. 