Closing in on PA Primary

After a long lull in the Presidential primary season, Pennsylvania voters will go to the polls a week from today.

Hillary Clinton is ahead in the polls there but Barack Obama has the overall lead in the overall delegate count.

Tomorrow, voters will get a chance to see the Democratic rivals debate in Philadelphia.

On the eve of that face-off, WBUR's Bob Oakes turns to our political analysts: on the Democratic side, Dan Payne, and Republican analyst Todd Domke.