C.R.S.
Section 31-10-607
Manner of voting in precincts which use paper ballots
(1)
In precincts which use paper ballots, upon receiving his ballot, the registered elector shall immediately retire alone to one of the voting booths provided and shall prepare his ballot by marking or stamping in ink or indelible pencil, in the appropriate margin or place, a cross mark (X) opposite the name of the candidate of his choice for each office to be filled; except that no cross mark (X) shall be required opposite the name of a write-in candidate. In case of a question submitted to a vote of the people, said elector shall mark or stamp, in the appropriate margin or place, a cross mark (X) opposite the answer which he desires to give. Before leaving the voting booth, said elector shall fold his ballot without displaying the marks thereon, so that the contents of the ballot are concealed and the stub can be removed without exposing any of the contents of the ballot, and he shall keep the same so folded until he has deposited his ballot in the ballot box.(2)
Each registered elector who has prepared his ballot and is ready to cast his vote shall then leave the voting booth and approach the judge of election having charge of the ballot box. He shall give his name to that judge, who shall announce the name of such elector and the number upon the duplicate stub of his ballot, which number must correspond with the stub number previously placed on the registration book or registration list. If the stub number of the ballot corresponds and is identified by the initials of the judge of election placed thereupon, the judge of election shall then remove the duplicate stub from such ballot. Such ballot shall then be returned to the registered elector, who shall thereupon, in full view of the judges of election, cast his vote by depositing the ballot in the ballot box, with the official endorsement on said ballot uppermost.(3)
Each registered elector shall mark and deposit his ballot without undue delay and shall leave the immediate voting area as soon as he has voted. No such elector shall occupy a voting booth already occupied by another, nor remain within the immediate voting area more than ten minutes, nor occupy a voting booth for more than five minutes if all such booths are in use and other voters are waiting to occupy the same. No registered elector whose name has been entered on the pollbook shall be allowed to reenter the immediate voting area during the election except a judge of election.
Source:
Section 31-10-607 — Manner of voting in precincts which use paper ballots, https://leg.colorado.gov/sites/default/files/images/olls/crs2023-title-31.pdf
(accessed Oct. 20, 2023).