We are on the eve of the biggest debate of this Republican primary season. Tomorrow night in Iowa, we will be there. The Republican presidential candidates will collide right here on the Fox News Channel. And ahead of that all-important showdown, some new polls are shaking up the GOP field. And they are showing us just how volatile this, well, nomination race really is.

First, we begin with the view from a nationwide poll where according to the Wall Street Journal and NBC News, former House Speaker Newt Gingrich leads Mitt Romney by a stunning 17 points. Now, they are followed by Ron Paul, Michele Bachmann, Rick Perry and Jon Huntsman.

But the story on the ground, in Iowa, very different. In a survey conducted by the left-leaning public policy polling group, Speaker Gingrich is leading by only one percentage point and surging now in to second place is Congressman Ron Paul with 21 percent of the vote. They are followed by Mitt Romney, Michele Bachmann, Rick Perry and Rick Santorum.

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