Poll: Sherrod Brown 15 points ahead in Ohio Senate race

Brown's approval rating is still lower than Democrats would like, standing at 42 percent, with 33 percent disapproving. But it's a minor improvement over October, when 40 percent said they approved and 35 percent said they disapproved.

The survey of 1,022 likely Ohio voters was conducted through automated telephone interviews between Nov. 4-6 and had a margin of error of plus or minus 3.1 percentage points.

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