Photo: ColoradoCare signatures (AP Photo)

In this Oct. 2, 2015, file photo, Colorado Sen. Irene Aguilar, right, who is a physician at Denver Health, helps deliver more than 156,000 signatures to put a health care question on the 2016 ballot, outside the offices of the Colorado Secretary of State, in Denver. The group ColoradoCareYES wants to see Colorado start the nation's first universal health care plan.