I read the WaPo article you posted. Although I’m having trouble believing this poll, I did find it interesting to see that the Donald’s support was almost even across all four Republican voter “segments” surveyed: Tea Party, Evangelical, Conservative, and Moderate. This was not true of any other candidate. I think that’s probably a sign of a broad cross-section of support for Trump.
Colorado is all vote by mail ... good luck winning that state in a presidential year