17-62-504. Amendment of optional plan.
(1) Subject to Subsection, an optional plan, after going into effect following an election held under Section, may be amended by an affirmative vote of two-thirds of the county legislative body. (2) 17-62-501
(2) Notwithstanding Subsection, an amendment to an optional plan that is in effect may not take effect until a majority of registered voters voting in a general or special election at which the amendment is proposed approve the amendment, if the amendment changes: (1) the size or makeup of the legislative body, except for adjustments necessary due to decennial reapportionment; or the distribution of powers between the executive and legislative branches of county government.