A new poll shows Rick Santorum edging ahead of Mitt Romney in Ohio.
The Quinnipiac University poll out Wednesday found that Santorum jumped to the lead with Ohio voters just three weeks before the Republican presidential primary.
The former Pennsylvania senator leads Romney 36-29 percent among likely primary voters.
Former U.S. House Speaker Newt Gingrich was third with 20 percent.
A Quinnipiac poll released last month had the former Massachusetts governor Romney well ahead of Santorum, but that was before Santorum's sweep in Colorado, Minnesota and Missouri last week.
The latest telephone survey interviewed 553 likely Republican voters over the past week and has a margin of error of 4 percentage points.
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