All in the numbers for Santorum

Rick Santorum is on top, for now.
According to the latest Gallup daily tracking poll Santorum has zipped by Mitt Romney on the national stage.
Santorum now is backed by 36 percent of Republicans while Romney has dropped to 31 percent support.
Just a week ago, the two were statistically tied. Romeny had 33 percent and Santorum had 31 percent.
Now after Santorum picked up three victories in Missouri, Colorado and Minnesota,  he has jumped 5 percent to take the lead.
The two front runners were followed by Newt Gingrich with 13 percent and Ron Paul at 11 percent.
Can Santorum sustain his momentum?