Colorado Revised Statutes Title 1. Elections § 1-2-223. Names transferred when precinct boundaries changed

(1) In case any new election precinct is formed within a county or in case of the division of any existing precinct, the precinct number on the voter's master file record shall be changed to reflect the new precinct number.

(2) In case any change is made in precinct boundaries as a result of annexation affecting county boundaries, the county clerk and recorder of the annexing county shall update in the statewide voter registration system the registration records of all electors residing in the annexed territory as soon as practicable. The registrations are considered as continuing registrations with all the registered electors involved having full rights and privileges as if no change in county boundaries had occurred.