Republican presidential candidates (left-right) Bobby Jindal, Rick Perry, Rick Santorum, Carly Fiorina and George Pataki on stage during the first "kid's table" debate last month.
Republican presidential candidates Donald Trump (right) and Wisconsin Gov. Scott Walker speak together during a commercial break at the first Republican presidential debate in Cleveland on Thursday. Trump's remarks about Fox News debate moderator Megyn Kelly have triggered a firestorm.
Newt Gingrich greets supporters during a rally at Wings Plus in Coral Springs, Fla., on Jan. 25. The GOP candidates meet in Jacksonville Thursday night for a final debate before Tuesday's primary.