Diana DeGette and Ed Perlmutter, interestingly, have chosen to stay neutral. DeGette is probably still smarting from her early endorsement of Hillary Clinton -- no one likes backing a failed candidate -- and Perlmutter is no doubt still pissed at Ritter for not naming him to the Senate. They are also likely quite torn between the two candidates, who are both bright, capable, and likable.
But this is shaping up into a nice insiders vs. grassroots battle. Romanoff's sponsorship by Pueblo pols Wally Stealy and Bill Thiebaut is a big deal. I'm curious who else will jump out for Andrew after his official announcement tomorrow. Stay tuned.