Colorado constitution
Article V
Section 48.2

(6) If, for any reason, the commission does not adopt a final plan for both houses of the general assembly by the date specified in subsection (5) of this section, then nonpartisan staff shall submit the unamended third staff plan to the supreme court for review pursuant to section 48.3 of this article V. If the commission approves a plan for one house of the general assembly but not the other house, then the plan for the approved house shall be submitted to the supreme court as the final plan for that house, and the unamended third staff plan shall be submitted to the supreme court as the final plan for the house for which the commission did not approve a plan.