Colo. Const. sched. § 19

Presidential electors, 1876. The general assembly shall, at their first session, immediately after the organization of the two houses and after the canvass of the votes for officers of the executive department, and before proceeding to other business, provide by act or joint resolution for the appointment by said general assembly of electors in the electoral college, and such joint resolution or the bill for such enactment may be passed without being printed or referred to any committee, or read on more than one day in either house, and shall take effect immediately after the concurrence of the two houses therein, and the approval of the governor thereto shall not be necessary.