C.R.S. § 31-10-1507
31-10-1507. Forgery
31-10-1507. Forgery. Any person who falsely makes, alters, forges, or counterfeits any ballot before or after it has been cast, or who forges any name of a person as a signer or witness to a petition or nomination paper, or who forges the name of a registered elector to an absent voter's ballot commits forgery.