Poll: Romney retakes national lead from Santorum

Numbers released Sunday show Romney with the support of 31 percent of likely-GOP voters with Santorum at 29 percent. Former House Speaker Newt Gingrich comes in third with 15 percent support.

Support for Romney has surged nationally; last week Santorum held a 10 point lead over the former Massachusetts governor, in Gallup’s survey. Saturday’s Gallup five-day average showed Santorum only up 1 point, with 31 percent support to Romney’s 30 percent.