Colorado Revised Statutes

Colo. Rev. Stat. § 1-2-101 (2026)

Qualifications for registration - preregistration

✓ current as of July 2026

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(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: (a) The person is a citizen of the United States; and (b) The person has resided in this state twenty-two days immediately prior to the election at which the person intends to vote. (2) (a) (I) [Editor's note: This version of subsection (2)(a)(I) is effective until January 1, 2025.] Notwithstanding subsection (1) of this section, upon satisfactory proof of age, every person who is otherwise qualified to register and is sixteen 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 his or her 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) (a) (I) [Editor's note: This version of subsection (2)(a)(I) is effective January 1, 2025.] 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. (II) Repealed. (b) The registration requirements of section 1-2-201 apply to a person preregistering to vote under this subsection (2). (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 (3) Repealed.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.

Notes of Decisions

Cited in 14 cases, 1975–2019 · leading case: Roper v. Simmons, 543 U.S. 551 (2005).

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Roper v. Simmons, 543 U.S. 551 (2005). · cites it 2× “2, § 2 Colorado 18 Colo. Rev. Stat. § 1-2-101 (Lexis 2004) Connecticut 18 Conn.”

Thompson v. Oklahoma, 487 U.S. 815 (1988). · cites it 2× “Colo. Rev. Stat. § 1-2-101 (1980) Conn. Conn.”

People v. Onesimo Romero, 746 P.2d 534 (Colo. 1987). · cites it 10× “§ 1-2-101, 1B C.R.S. (1980). [1] Upon applying for voter registration, one must provide accurate information regarding his residence.”

Buckley v. Am. Constitutional Law Found., Inc., 525 U.S. 182 (1999). “See Colo. Rev. Stat. §1-2-101 (1998). The elector requirement mirrors Colorado’s regulation of candidate elections, for which all delegates to county and state assemblies must be registered electors, §1-4-602(5), and *229 where candidates cannot be nominated for a primary…”

Common Cause of Colorado v. Buescher, 750 F. Supp. 2d 1259 (D. Colo. 2010). · cites it 2× “See C.R.S. §§ 1-2-101, 102. Registration may be achieved in person (§ 1-2-202), online (1-2-202.”

Gordon v. Blackburn, 618 P.2d 668 (Colo. 1980). · cites it 2× “See sections 1-2-101 and 31-10-201, C.R.S.1973.”

Romero v. Sandoval, 685 P.2d 772 (Colo. 1984). · cites it 2× “(1980) provides in part: (1) The registration sheet to be signed by the elector shall bear the following statement: “WARNING: IT IS A CRIME: To swear or affirm falsely as to your qualifications to register to vote.”

Am. Constitutional Law Found., Inc. v. Meyer, 870 F. Supp. 995 (D. Colo. 1994). · cites it 2× “C.R.S. § 1-2-101 (Supp.1994). A significant change made by S.”

Chesser v. Buchanan, 568 P.2d 39 (Colo. 1977). · cites it 2× “See sections 1-2-101 and 1-2-201, C.R.S.1973.”

Nat'l Prohibition Party v. State, 752 P.2d 80 (Colo. 1988). “In 1982, the single petition requirement was enforced and the Colorado Prohibition and Libertarian Parties each placed candidates on the ballot for Governor, Lieutenant Governor, State Treasurer, and Regent of the University of Colorado.”

Goodall v. Griswold, 369 F. Supp. 3d 1144 (D. Colo. 2019). · cites it 2× “See Colo. Rev. Stat. § 1-2-101 (1)(b) (providing, as a condition of voter registration, that the person have "resided in this state twenty-two days immediately prior to the election at which the person intends to vote").”

Meyer v. Putnam, 534 P.2d 622 (Colo. 1975). · cites it 5× “Section 1-2-101(1), C.R.S. 1973. He was also willing to sign the oath of electors, which only requires that he swear or affirm under penalty of perjury to that same information.”

Show all 14 citing cases →

— Colo. Rev. Stat. § 1-2-101(1) — 4 cases

People v. Onesimo Romero, 746 P.2d 534 (Colo. 1987). “§ 1-2-101, 1B C.R.S. (1980). [1] Upon applying for voter registration, one must provide accurate information regarding his residence.”

Meyer v. Putnam, 534 P.2d 622 (Colo. 1975). “Section 1-2-101(1), C.R.S. 1973. He was also willing to sign the oath of electors, which only requires that he swear or affirm under penalty of perjury to that same information.”

Meyer v. Putnam, 534 P.2d 622 (Colo. 1975).

Hesseltine v. United States, 538 F. Supp. 1003 (D. Colo. 1982).

— Colo. Rev. Stat. § 1-2-101(2) — 1 case

People v. Onesimo Romero, 746 P.2d 534 (Colo. 1987). “§ 1-2-101, 1B C.R.S. (1980). [1] Upon applying for voter registration, one must provide accurate information regarding his residence.”

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