Barack Obama has jumped back to a statistically significant lead over Hillary Clinton in Gallup’s daily tracking poll. In a survey conducted May 9-11, Obama is ahead of Clinton 50 percent to 43 percent with a 3 percent margin of error. It has been almost three weeks since he was ahead by that kind of margin. In the general election match-ups, Obama leads McCain 47 percent to 43 percent and Clinton is ahead 49 percent to 44 percent which Gallup says “represent the candidates’ highest margins over McCain, to date, since Gallup began tracking the general election ballots in early March.” The margin of error in this May 7-11 survey is 2 percent.