Win McNamee/Getty Images
Barack Obama acknowledges the applause.
Jeff Chiu/Associated Press
Obama strides on to the stage to give his acceptance
speech.
Ron Edmonds/Associated Press
Obama and his running mate, Sen. Joseph Biden.
Alex Brandon/Associated Press
Barack and Michelle Obama enjoy the moment.
VWH Campbell Jr./Post-Gazette
Obama and Biden visit a biodiesel plant in Monaca, Beaver County.