Clinton, Obama cross Pennsylvania on eve of primary

Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., campaigns at Penn State in State College, Pa., Sunday, April 20, 2008. (AP Photo/Charles Dharapak)

JOHNSTOWN, Pa.—It's the last full day of campaigning before the Pennsylvania primary, and once again, the two Democratic candidates will spend the day criss-crossing the state.

Hillary Rodham Clinton, her husband and their daughter Chelsea have separate campaign stops planned before meeting up in Philadelphia for an evening event. Barack Obama finishes the day in Pittsburgh.

The weekend saw some of the most negative attacks of the campaign. Each side aired TV ads yesterday that accused the other of maintaining ties to special interests that they both claim to reject.

Clinton also criticized Obama for saying that either of the Democrats -- as well as John McCain -- would be "better than George Bush." She says the Democrats don't need a nominee who will "cheer on John McCain."

Clinton picked up an endorsement from an unlikely source, the Pittsburgh Tribune-Review. It's owned by Richard Mellon Scaife, a conservative who funded many of the investigations that plagued Bill Clinton while he was in office.