New front-runner Huckabee remains quiet, positive
                                
                                
                                    (Newser) -
                                    Republican presidential hopefuls held their final debate before Iowa’s Jan. 3 caucuses today in Des Moines, focusing on taxes and using only a few sharp words. Former Arkansas governor Mike Huckabee, suddenly the front-runner in state polls, remained largely in the background, MSNBC reports, avoiding controversy and urging candidates...