Hillary up ten

Zogby's tracking poll released today shows Hillary opening up a ten point lead going into today's voting, up from six points in the previous two day cycle. This confirms the trend indicated by the Suffolk University poll yesterday and leaks in Drudge that said Hillary's internal polling gives her an eleven point lead.
She now leads Obama, 51% to 41%, having gained three points over the past 24 hours as Obama lost one point, pushing her beyond the poll's margin of error to create a statistically significant lead for the first time in the Pennsylvania daily tracking poll.
Could this be the result of the Michael Moore endorsement?