AG99: Enough Democratic (and Unaffiliated) voters cast their ballots in 2016 to award Clinton all nine of Colorado's votes in the Electoral College. Further, the number of registered Republican voters in the state has fallen by 4 percent since 2012. As of late, the largest group of Colorado voters identifies as unaffiliated. For their parts, Democratic and Republican voters are almost equally represented.

http://www.denverpost.com/2016/08/07/electoral-math-colorado-republicans-presidential-election/