Article Photos: Exit poll: Hint of economic optimism boosted Obama 3/6

  Students at the University of California Davis line up to vote at a polling place set up the at Memorial Union on campus in Davis, Calif. on Tuesday, Nov. 6, 2012. (AP Photo/The Sacramento Bee,Autumn Payne) MAGS OUT; LOCAL TV OUT (KCRA3, KXTV10, KOVR13, KUVS19, KMAZ31, KTXL40); MANDATORY CREDIT