Presumptive Republican presidential nominee Sen. John McCain delivers remarks at the U.S. Navy and Marine Corps Memorial Stadium in Annapolis, Md. (Paul J. Richards/ AFP/Getty Images)
Democratic presidential hopeful Sen. Hillary Rodham Clinton campaigns at King’s College in Wilkes-Barre, Pa. (Charles Dharapak / Associated Press)
Democratic presidential hopeful Sen. Barack Obama speaks to supporters during a town hall meeting at Wilkes University in Wilkes-Barre, Pa. (Alex Wong / Getty Images)
Democratic presidential hopeful Sen. Barack Obama addresses the Pennsylvania Statewide AFL-CIO Convention. (Alex Wong / Getty Images)
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Democratic presidential hopeful Sen. Hillary Rodham Clinton campaigns at King’s College. (Charles Dharapak / Associated Press)
Republican presidential candidate Sen. John McCain delivers a speech at the Navy and Marine Corps Stadium during his “Service to America” tour. (Mary Altaffer / Associated Press)
Republican presidential candidate Sen. John McCain pays for Girl Scout cookies during a visit to a USO lounge at the Baltimore Washington International Airport. (Mary Altaffer / Associated Press)
Democratic presidential hopeful Sen. Hillary Rodham Clinton signs a shirt as she campaigns at Mercyhurst College in Erie, Pa. (Charles Dharapak / Associated Press)
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Democratic presidential hopeful Sen. Barack Obama stretches to shake hands with an overflow crowd before speaking at a town hall meeting at Wilkes University. (Alex Brandon / Associated Press)
Presidential hopeful Republican Sen. John McCain listens to a question from an Episcopal High School student during a town hall meeting at his alma mater in Alexandria, Va. (Shawn Thew / EPA)
Democratic presidential candidate Sen. Hillary Rodham Clinton addresses the AFL-CIO Biennial Convention at the Sheraton Philadelphia. (William Thomas Cain / Getty Images)
Democratic presidential hopeful Sen. Barack Obama speaks during a town hall meeting at Strath Haven High School in Wallingford, Pa. (Alex Brandon / Associated Press)
