C.R.S.
Section 1-9-201
Right to vote may be challenged
(1)
Intentionally left blank —Ed.(a)
A person’s right to vote at a polling location or in an election may be challenged on one or more of the following grounds:(I)
The person is not a citizen of the United States;(II)
The person has not resided in the state for twenty-two days immediately preceding the election;(III)
The person will not be eighteen years of age or older on or before election day; or(IV)
If being a property owner or the spouse or civil union partner of a property owner is required for the election, the person is not a property owner or the spouse or civil union partner of a property owner.(b)
If a person whose right to vote is challenged at a polling location refuses to answer the questions asked or sign the challenge form in accordance with section 1-9-203, the person shall be offered a provisional ballot. If the person casts a provisional ballot, the election judge shall attach the challenge form to the provisional ballot envelope and indicate “Challenge” on the provisional ballot envelope.(2)
An election judge shall challenge any person intending to vote who the judge believes is not an eligible elector as provided in subsection (1)(a) of this section. In addition, challenges may be made by watchers or any eligible elector of the precinct as provided in subsection (1)(a) of this section.(3)
A challenge at a polling location shall be made in the presence of the person whose right to vote is challenged.
Source:
Section 1-9-201 — Right to vote may be challenged, https://leg.colorado.gov/sites/default/files/images/olls/crs2023-title-01.pdf
(accessed Oct. 20, 2023).