Campaign attention shifts to S.C., Nev. (AP) word look up  

yahoo.com/dailynews/rss/politics/*http://news.yahoo.com/s/ap/20080116/ap_po/campaign_rdp">Massachusetts Gov. Mitt Romney speaks to his supporters at his primary election night rally, Tuesday, Jan. 15, 2008, in Southfield, Mich. (AP Photo/Carlos Osorio)" border="0" />AP - Republican presidential contenders focused their energies on South Carolina’s GOP primary just four days off with still no clear front-runner after a critical Michigan victory for Mitt Romney and with John McCain facing what could be a make-or-break battle.