In this Oct. 6, 2014 photo, candidate for U.S. Senate, Rep. Cory Gardner, (R-Colo.), left, speaks as incumbent U.S. Sen. Mark Udall, (D-Colo.), right, listens during a debate in Denver. The two are locked in what many polls say is a tight race, less than three weeks before election day on Nov. 4, 2014. (AP Photo/Brennan Linsley)
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