As he heads into Pennsylvania, there’s good news and bad news for Democratic presidential contender Barack Obama in the recent exit polls of white voters in Democratic primaries. The good news is that by a lopsided majority of six to one whites said that race was not a factor in considering whether to back Obama or not. That pretty much conforms to virtually every poll that’s been taken since Obama tossed his hat in the presidential ring a year ago. His red state Democratic primary and caucus wins and the handful of endorsements he’s gotten from the red state Democratic senators and governors seem to bolster the poll findings as well as his camp’s contention that the majority of whites have bought his race-neutral change and unity pitch.