Jacksonville, Florida (CNN) - Republican presidential hopefuls headed into the homestretch of the critical Florida primary campaign Friday after a riveting debate that analysts believe gave Mitt Romney a boost over fellow front-runner Newt Gingrich.

Florida voters will decide Tuesday who gets the biggest delegate haul so far of the GOP presidential race, and the CNN/Republican Party of Florida debate provided the four candidates with their final chance to face one another on the same stage in the increasingly vitriolic contest.