Colorado Revised Statutes Title 1. Elections § 1-13.5-1203. Challenge to be made by written oath

Each challenge must be made by written oath, signed by the challenger under penalty of perjury, setting forth the name of the person challenged and the basis for the challenge. The election judges shall deliver all challenges and oaths to the designated election official at the time the other election papers are returned. The designated election official shall deliver all challenges and oaths to the district attorney for investigation and appropriate action as soon as possible.