Pennsylvania voters who figure they've heard it all in the raucous U.S. Senate fight should brace for a final earful. Democrats are making a final push to appeal to students and black voters who helped give President Barack Obama a double-digit win here in 2008. Former President Bill Clinton is rallying college students in the Philadelphia area with a visit to Temple on Thursday. President Obama will swoop into Philly for a voter canvass kickoff at Temple on Saturday.