C.R.S. § 1-4-603
1-4-603. Designation of major political party candidates by petition
1-4-603. Designation of major political party candidates by petition. Candidates for major political party nominations for the offices specified in section 1-4-502 (1) that are to be made by primary election may be placed on the primary election ballot by petition, as provided in part 8 of this article.