Republican presidential candidate and former Speaker of the House Newt Gingrich and his wife Callista greet supporters and pose for photographs outside a polling place on primary day in Celebration, Fla.

Jean Richard-Houck sits on her mobility scooter as she watches Newt Gingrich greet voters at the Celebration Heritage Hall polling precinct in Celebration, Fla.

Republican presidential candidate and former Massachusetts Gov. Mitt Romney works the phones for votes at his campaign headquarters on Jan. 31, 2012 in Tampa, Fla. Romney has a double-digit lead going into the primary.

Republican presidential candidate and former Speaker of the House Newt Gingrich visits with people at Fred's Southern Kitchen on Jan. 31, 2012 in Plant City, Fla.

A voter arrives at a polling station on primary day on Jan. 31, in Tampa, Florida. Republican voters head to the polls as their party continues the process of deciding who will be their general election candidate against President Barack Obama.

Security guards for Republican presidential candidate and former Speaker of the House Newt Gingrich push Ron Paul supporter Eddie Dillard of Orlando away from Gingrich as he campaigns on primary day outside a polling place at First Baptist Church of Windermere on Jan. 31 in Orlando, Florida. Dillard had been at the polling place all morning when Gingrich stood in front of him to pose for photographs. Gingrich supporters then began shoving Dillard and stepping on his feet when security came over and pushed him back. Polls show Gingrich's fellow candidate, former Massachusetts Gov. Mitt Romney, with a double digit lead going into the Florida primary.

Activists from PETA dressed as pigs walk outside a polling precinct in Orlando, Florida on Jan. 31.

Ray Roy sets up a polling station as he prepares for voters on primary day on Jan. 31 in Tampa, Florida. Republican voters head to the polls as their party continues the process of deciding who will be their general election candidate against President Barack Obama.