Clinton's numbers may be down in CO compared to two months ago, but the margins are exactly where they were in their
February 2014 poll, when Paul was leading her by 3% and she was only 1% ahead of Cruz (and that was when she was further ahead in national polls). I think the results show a continuing poor fit for Hillary there rather than any Paulmentum or emailgate. But it'd be good to see other pollsters.
Also unsurprising that Bush is doing the worst there. He may have to put Martinez or Sandoval on his ticket if he wants to make a play in the Mountain West (if he's the nominee).