Colo. Rev. Stat. § 31-12-305
The governing body of such city or town shall, by ordinance and within a reasonable time to be fixed by the court in said order, direct that an election be held to submit the question of the dissolution and annexation to a vote of the registered electors. If the order of the district court is served more than thirty days and less than one hundred twenty days prior to the next regular election of such city or town, the question shall be submitted to a vote of the registered electors at such regular election; otherwise, the question shall be submitted at a special election to be called and held for that purpose. Such election shall be conducted in accordance with the provisions of the "Colorado Municipal Election Code of 1965".
C.R.S. § 31-12-305
This section is similar to former § 31-8-203 as it existed prior to 1975.
For the "Colorado Municipal Election Code of 1965", see article 10 of this title.