A new Public Policy Polling survey shows Rick Santorum has pulled ahead of Mitt Romney among Republican voters nationally, 38% to 23%. They are followed by Newt Gingrich at 17% and Ron Paul at 13%.
A key reason for Santorum's surge is his own high level of popularity: 64% of voters see him favorably to only 22% with a negative one. But the other, and maybe more important, reason is that Republicans are significantly souring on both Romney and Gingrich. Romney's favorability is barely above water at 44% to 43% while Gingrich is upside down at 42% to 44%.
Most interesting: "If Gingrich dropped out 58% of his supporters say they would move to Santorum, while 22% would go to Romney and 17% to Paul. Santorum gets to 50% in the Newt free field to 28% for Romney and 15% for Paul."