"Mitt Romney and I are asking you to vote of love for country," Ryan said.
Countering the GOP pep rally, Rhode Island Gov. Lincoln Chafee and U.S. Rep. Allyson Schwartz, D-Pa., staged a news conference on a closed roadway not far from the aviation service facility where the rally was held.
Schwartz said she believes Romney's 11th-hour push in Pennsylvania is a desperate act that reflects his campaign's failure to overtake Obama in Ohio.
Chafee, an ex-Republican who is now the nation's only independent governor, said the nation's economic problems stem from Republican policies that preceded Obama and created deficits that hurt the middle class.
"Pennsylvanians, you cannot let these people back into office," he said.
"They're not middle-town," he said, referring to the town where the airport is located. "They're far-right town."