Newt Gingrich says Mitt Romney will be the Republican nominee if he wins South Carolina tomorrow. But last night's debate started with Gingrich's past sex-life. Rick Santorum called Gingrich "grandiose," and Gingrich retorted that Santorum had "small" ideas. Romney struggled over releasing his tax returns and dodged questions on Bain Capital. Santorum said Romney wasn't reliably "pro-life." Will Gingrich's lead in current polls mean a victory tomorrow? Does Santorum have a chance to be the "anti-Romney" in Florida later this month?