FILE - In this Aug. 17, 2012 file photo, Maine independent Senate candidate Angus King speaks at a news conference in Brunswick, Maine. King's opponent, Republican Charlie Summers is getting another television boost _ the biggest yet _ in the U.S. Senate race in Maine. A National Republican Senate Committee official says $600,000 is being spent over the next two weeks. The official wasnÃ¢€™t authorized to publicly discuss the matter and spoke on the condition of anonymity. The official tells The Associated Press that Maine is one of three states where the committee is currently engaged.