The mayor must be a registered voter who has resided in the city's limits for at least 12 consecutive months preceding the election. The voters of the city elect him or her in the city's regular election. If the person resided in a place annexed from the city limits for the required time, they are also eligible.
In case of the mayor's death, disability, resignation, or other vacation of his office, the city council can order a special election as soon as practicable to fill the vacancy until the next regularly elected mayor's term has commenced or the city council may appoint some registered voter to act as mayor until such special election. If the city council appoints the replacement, it can appoint one of their own number acting mayor or mayor pro tem who is entitled to act as mayor.
The mayor is responsible for signing documents which statutes or ordinances require he or she sign. The mayor supervises the conduct of all city officers, examines reasonable complaints made against them, and corrects and reports any violations or neglect of duty for punishment. The mayor has the powers that county sheriffs have to suppress disorders and keep the peace and he or she can perform duties compatible with the nature of his office as the city council may require.
The mayor is the presiding officer of the city council, with the same voting powers as any of its members. However, it is possible that the city has an ordinance preventing the mayor from voting on anything before the council, except when there is a tie vote. This can exclude the mayor for purposes of determining a quorum or the requisite majority in the council.
If this law does exist, the mayor must be allowed to disapprove any ordinance that passes through the council. This kind of ordinance may be adopted, amended, or repealed only within the 60 days preceding the election of any mayor and would take effect on the mayor's assumption of office.
The mayor, as a member of the governing body and the city council, is the city's chief executive officer and "conservator of the peace." It is his or her duty to enforce the ordinances and the regulations of the city.
Mayors in the Denver region municipalities of Colorado may belong to the Metro Mayors Caucus, which is a government sector lobbying organization.