You do know that Gingrich has many more delegates than Santorum, don’t you?
Not according to the WSJ
Mitt 419 Delegates
Rick 178 Delegates
Newt 107 Delegates
Ron 47 Delegates
http://projects.wsj.com/campaign2012/delegates
Thirteen is many? (I assume you are counting hard only.) Over the next few weeks, Minnesota, Colorado, Missouri, and Iowa will select the hard delegates. Santorum is better placed for these to make up the difference. Santorum is 39 ahead on soft count. Together, they do not match Romney.