A number of possible candidates also not attending tonight
                                
                                
                                    (Newser) -
                                    If the GOP held a presidential debate and barely anyone attended, would it still be a debate? The AP and Reuters are the latest to duck out of tonight's South Carolina debate,  Politico  reports. A number of prospective candidates, including Mitt Romney, Sarah Palin, Newt Gingrich, Mitch Daniels, and...