We lost Colorado solely because Udall ran such a poor campaign, had he ran a campaign like Begich did in AK we would've won I have no doubt about that. That's the only race that I think was salvageable.
I think that Colorado and Iowa were lost by the Democrats running terrible campaigns. By contrast, Alaska and North Carolina were pitch-perfect Democratic campaigns that ran into brick walls in a stunningly Republican year. In a less GOP year, Hagan, at least, would've survived, but there was absolutely nothing she could do in 2014 to do better than she did.