According to The Allentown Morning Call's Pennsylvania Ave. blog, that's what's going in in PA. Toomey said publicly on Monday that he's thinking about it. Specter defeated Toomey by fewer than two percentage points in the 2004 GOP primary, and the rematch looks like it could be equally tough: a Susquehanna poll conducted Feb. 23-26 found that Republicans in PA favor replacing Specter by a 66-26 percent margin.

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