Colorado Revised Statutes Title 31. Government Municipal § 31-2-225. Unlawful acts--penalty

(a) For any person willfully and knowingly to circulate or cause to be circulated or sign or procure to be signed any petition bearing the name, device, or motto of any person, organization, association, league, or political party, or purporting in any way to be endorsed, approved, or submitted by any person, organization, association, league, or political party, without the written consent, approval, and authorization of such person, organization, association, league, or political party;

(b) For any person to sign any name other than his own to any such petition or knowingly to sign his name more than once for the same measure at one election;

(c) For any person to sign any such petition who is not a registered elector of the municipality or of the territory proposed to be incorporated at the time of signing the same;

(d) For any person to sign any affidavit as circulator without knowing or reasonably believing the statements made in such affidavit to be true;

(e) For any person to certify that an affidavit attached to such petition was subscribed or sworn to before him unless it was so subscribed and sworn to before him and unless such person so certifying is duly qualified under the laws of this state to administer an oath; or

(f) For any person to do willfully any act in reviewing the petition or setting the ballot title which shall confuse or tend to confuse the issues submitted or proposed to be submitted at any election held under this part 2 or to refuse to submit any such petition in the form presented for submission at any election held under this part 2.