With the first two presidential nominating contests under his belt, Mitt Romney is surging nationally among registered Republicans. Gallup's latest national poll shows Romney with 37 percent support, equaling his highest point of the race, and a 13-point swing for Romney from his position just prior to the Iowa caucuses.

Romney has also increased his lead to 23 points over his closest rivals in the GOP primary, according to Gallup. Rick Santorum and Newt Gingrich are both polling at 14 percent, while Ron Paul is close behind at 12 percent. The 23-point lead indicates that Romney's wins in Iowa and New Hampshire may be helping him gain some momentum.

The RealClearPolitics poll average shows that Romney leads by 15 points nationally.

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