Obama, his campaign trying to transcend it -- but can't I can't be the only person who sees the snake in the room. The one that slithers away whenever the political pundits start explaining what the latest presidential poll means. From the moment Barack Obama went from a wannabe presidential contender to a front-runner, the race factor curled up and waited to strike anyone who got too close. Former President Bill Clinton got bit. So did the Rev. Jeremiah Wright. Still, whenever commentators talk about the close contest between Obama and John McCain, they ignore the snake. Yet anyone who...