Rep. Mark Udall (D) led former Rep. Bob Schaffer (R) by 9 points in a two-day automated poll conducted by Public Policy Polling, a Democratic firm based in Raleigh, N.C.
In the poll, which surveyed 1,050 likely voters July 9-10, Udall led Schaffer 47 percent to 38 percent, with 14 percent undecided. The polls error margin was 3 points.
Udall and Schaffer are running for the seat being vacated by retiring Sen. Wayne Allard (R).
The poll also found that Sen. Barack Obama (D-Ill.) led Sen. John McCain (R-Ariz.) in a hypothetical presidential matchup.