IIRC, it’s the polls in this cycle by Fox and another outfit, which show Republicans in the lead that are the “gold standard” polls where they are polling both cells and landlines and are using live pollsters vs. robo polls.
I do agree with you though, Colorado is way too close to have Democrat money pull out of it. For me, it’s state No. 52 for the Republicans, but remains a tossup, leaning Republican.
“DCCC pulls $1M in ads for Andrew Romanoff [ Colorado ] “
http://www.freerepublic.com/focus/f-news/3213970/posts