CO-6 isn't a Trump kind of district, I think he'll be a drag on the Republican there, plus it's trending D anyway and the Denver area is one of the fastest growing in the country.
I definitely see CO-6 flipping this year.
Mike Coffman is basically the opposite of a Trump sort of Republican (he's been running ads in Spanish challenging his opponent to a Spanish-language debate, for instance; he speaks Spanish and Carroll does not). He also has very strong support from the Ethiopian-American community in the area.
I do still think Carroll wins, but it's no sure thing, and like I said upthread, this is Democrats' last shot to knock Coffman off; after this he becomes irreversibly entrenched, short of some sort of weird Jim Leach 2006 scenario of not taking an opponent seriously in a Democratic wave.