Mitt Romney will defeat Newt Gingrich in the Florida Republican primary, news networks are projecting, in a victory that reestablishes the former Massachusetts governor as the clear frontrunner for the Republican presidential nomination. With more than 4,200 of 6,796 precincts reporting, Romney had 47 percent of the vote, followed by 31 percent for Gingrich, 13 percent for Rick Santorum and 7 percent for Ron Paul.