Republican challenger Ken Buck still holds a slight advantage in his race against incumbent Democratic Sen. Michael Bennet in Colorado.
The latest Rasmussen Reports telephone survey of likely voters in Colorado shows Buck with 50 percent support, while Bennet earns 45% of the vote. Two percent like some other candidate in the race, and four percent are undecided.
The race remains leans GOP in the Rasmussen Reports Election 2010 Senate Balance of Power rankings.
A week ago, Buck, a conservative county prosecutor, crossed the 50 percent mark for the first time, leading Bennet 51 percent to 43 percent.
The survey of 750 likely voters in Colorado was conducted on Oct. 3, 2010 by Rasmussen Reports. The margin of sampling error is +/-4 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC.
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