Last week Clinton had a 9 point lead in the poll.
Said pollster Clay Richards:
"With two weeks to go, Sen. Barack Obama is knocking on the door of a major political upset in the Pennsylvania Democratic primary. Obama is not only building on his own constituencies, but is taking away voters in Sen. Hillary Clinton's strongest areas - whites including white women, voters in the key swing Philadelphia suburbs and those who say the economy is the most important issue in the campaign."