The election cycle has reached the stage where there is such a torrent of polls released each day that the flipping leads could give many poll watchers whiplash. And Tuesday night's presidential debate at Hofstra University could make the race even more volatile. On Monday morning, the RealClearPolitics Average of national polls found President Obama and Mitt Romney tied at 47.3 percent apiece; by the afternoon, Romney had ticked up a tenth of a point. And that’s after Romney had wrested the lead from Obama last Tuesday for the first time in more than a year. But the real...

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