Supporters listen to Republican presidential candidate, former Massachusetts Gov. Mitt Romney as he speaks during a campaign stop at Homer's Deli and Bakery in Clinton, Iowa, today. (AP Photo/Chris Carlson)

Mitt Romney edged out Ron Paul for first place in a new poll of likely Iowa Republican caucus-goers, but it was Rick Santorum who made a huge jump, coming in third. Romney earned 25 percent while Paul took 22 percent in the poll, which was conducted by ORC International for CNN and Time magazine, released Wednesday.  In an unexpected shake-up, Santorum jumped ahead of Newt Gingrich to third place, taking 16 percent. Gingrich came in fourth with 14 percent, followed by Rick Perry with 11 percent, Michele Bachmann with 9 percent and Jon Huntsman with 1 percent/Alicia M. Cohen, The Hill. More here.

Question: Who would have a better chance at beating President Obama next fall -- Mitt Romney or Ron Paul.