1. (1) Every person who is eighteen years of age or older on the date of the next election and who has the following qualifications is entitled to register to vote at all elections:

   1. (a) The person is a citizen of the United States; and
   2. (b) The person has resided in this state twenty-two days immediately prior to the election at which the person intends to vote.

2. (2)

   1. (a)

      1. (I) Notwithstanding subsection (1) of this section, upon satisfactory proof of age, every person who is otherwise qualified to register and is fifteen years of age or older but will not have reached eighteen years of age by the date of the next election may preregister and update the person's preregistered information by any means authorized in this article for persons eighteen years of age or older. Upon reaching eighteen years of age, the person is automatically registered.
      2. (II) Repealed.
   2. (b) The registration requirements of section 1-2-201 apply to a person preregistering to vote under this subsection (2).
   3. (c) A person preregistered under this subsection (2) who is seventeen years of age on the date of a primary election or presidential primary election and who will be eighteen years of age on the date of the next general election is entitled to vote in the primary election or presidential primary election.
3. (3) Repealed.

Source: L. 92: Entire article R&RE, p. 636, § 2, effective January 1, 1993. L. 93: (1)(b) amended, p. 1397, § 13, effective July 1. L. 94: (1)(b) amended, p. 1751, § 4, effective January 1, 1995. L. 95: (1)(b) amended, p. 821, § 5, effective July 1. L. 96: (1)(b) amended, p. 1734, § 7, effective July 1. L. 2013: (1)(b) amended, (HB 13-1303), ch. 185, p. 687, § 6, effective May 10; (2) added, (HB 13-1135), ch. 184, p. 677, § 1, effective August 7. L. 2018: (3) added, (SB 18-150), ch. 261, p. 1600, § 1, effective July 1, 2019. L. 2019: (3) repealed, (HB 19-1266), ch. 283, p. 2644, § 5, effective July 1; (2)(c) added, (HB 19-1278), ch. 326, p. 3005, § 3, effective August 2. L. 2024: (2)(a)(I) amended, (SB 24-210), ch. 468, p. 3241, § 2, effective January 1, 2025.

Editor's note: (1) This section is similar to former § 1-2-101 as it existed prior to 1992.

(2) Subsection (2)(a)(II)(B) provided for the repeal of subsection (2)(a)(II), effective July 1, 2014. (See L. 2013, p. 677.)

Cross references: (1) For qualifications of electors, see also § 1 of art. VII, Colo. Const.; for voting age for electors, see § 1 of art. VII, Colo. Const., and article XXVI of the Constitution of the United States; for registration of citizens residing outside the United States, see article 8.3 of this title; for offenses relating to unlawful qualification as a taxpaying elector, see § 1-13-202.

(2) In 2013, subsection (1)(b) was amended by the Voter Access and Modernized Elections Act. For the short title and the legislative declaration, see sections 1 and 2 of chapter 185, Session Laws of Colorado 2013.

(3) For the short title (Colorado Votes Act) in HB 19-1278, see section 1 of chapter 326, Session Laws of Colorado 2019.

(4) For the legislative declaration in HB 19-1266, see section 1 of chapter 283, Session Laws of Colorado 2019.