Lt. Gov. Jane Norton conceded defeat in her campaign against Weld District Attorney Ken Buck for the Republican nomination for U.S. Senate. With 4,115 of 5,458 precincts reporting statewide, or 75 percent, Buck was leading Norton in the GOP primary for U.S. Senate, with 177,617 votes (52 percent) to Norton's 166,955 (48 percent). With about 90 percent of the votes counted in Weld County, Buck was trouncing Norton 76 percent to 23 percent.