The big headline out of Iowa this morning is that Rasmussen has Mitt Romney jumping ahead of Newt Gingrich, 23 percent to 20 percent, with Ron Paul not far behind at 18 percent. Scott Rasmussen notes that his firm has conducted five polls in Iowa in the past five months . . . with five frontrunners: Michele Bachmann, Rick Perry, Herman Cain, Gingrich, and now Romney.

About half say they could change their mind. Romney’s floor has been 17 percent and his ceiling so far is his current 23 percent.

A couple of interesting notes: Jon Huntsman, who is effectively skipping the state, is at 5 percent in Rasmussen’s latest; that’s 1.5 percent more than Rudy Giuliani finished with in 2008. Ron Paul won two delegates in Iowa with 9.93 percent of the vote, so if Huntsman can maintain his current level, he could achieve the improbable goal of winning a delegate . . . having made one stop in the state for one day so far. A cost-effective approach, no doubt!