The Colorado Secretary of State has released registration data for January 1, 2021. Here is it. Percentages are: Democratic 29.89%; Republican 27.19%; Libertarian 1.12%; Constitution .31%; Green .23%; Approval Voting .09%; Unity .08%; independent and miscellaneous 41.09%.

On October 1, 2020, the percentages were: Democratic 30.09%; Republican 27.36%; Libertarian 1.07%; Constitution .30%; Green .23%; Unity .07%; Approval Voting .07%; independent and miscellaneous 40.83%.