Today’s Gallup tracking poll shows Barack Obama retaking the national lead over Hillary Clinton “after the Jeremiah Wright scandal had badly damaged his numbers and put him behind for nearly a week,” says a 3.22 Talking Points Memo report. Obama is now at 48% (up 3) to Clinton’s 45% (down 2). Obama’s Philadelphia speech last Tuesday combined with Bill Richardson‘s endorsement “have gone a long way in fixing his poll numbers for now, but he still has yet to fully recover the six-point lead he had in Gallup a little over a week ago.”