Mark Udall 49
Bob Schaffer 39
Mark Udall has expanded his lead from eight points in a PPP survey three weeks ago to ten now. He has very strong across the board support- a 14 point lead with women, a 5 point lead with men, a 25 point lead with independents, leads with voters in every racial group, and a lead with three out of four age categories. In other words there's no group Bob Schaffer can really point to and say he'll benefit if they turn out in greater numbers because other than white Republicans they pretty much all favor his opponent.
Udall also has a 57-33 lead with voters who name the economy as their top concern.
Full results here.