A new poll of Pennsylvania from Strategic Vision (R) shows a slight increase in Hillary Clinton's primary lead since last week, though the change is not statistically significant:

Clinton 49% (+2)
Obama 40% (-2)

Perhaps a serious area of concern is that both candidates trail John McCain here, possibly due in part to the acrimony of the primary race:

McCain (R) 47%, Clinton (D) 44%
McCain (R) 49%, Obama (D) 39%