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Barack Obama tried to shore up support in Pennsylvania Saturday, a potential swing state in this year's election. The last two Democratic presidential candidates were able to secure the state — and political leaders in Philadelphia are trying to make that happen again.
John McCain tried to scramble back into contention Saturday in Iowa, a swing state that went Republican in 2004. Polls show that McCain is farther behind Barack Obama in Iowa than he is in Michigan, a state McCain has already ceded to his opponent.