Colorado is home to one of the most crucial races for Republicans to take control of the U.S. Senate, and it appears to be slipping away from Democratic Senator Mark Udall in the final stretch.

Republican Cory Gardner now picks up 51% of the vote to Udall’s 45% in the latest Rasmussen Reports statewide telephone survey of Likely Colorado Voters. Two percent (2%) like some other candidate in the race, while two percent (2%) are undecided. (To see survey question wording, click here.)

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The survey of 966 Likely Voters in Colorado was conducted on October 21-23, 2014 by Rasmussen Reports. The margin of sampling error is +/- 3 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.