Carol, left, and Amon Burton, Obama campaign volunteers, place election day signs on Lamar Blvd. before polls open on Tuesday morning, Nov. 6, 2012 in Austin, Texas. (AP Photo/Tamir Ka

 

              Carol, left, and Amon Burton, Obama campaign volunteers, place election day signs on Lamar Blvd. before polls open on Tuesday morning, Nov. 6, 2012 in Austin, Texas.  (AP Photo/Tamir Ka
Carol, left, and Amon Burton, Obama campaign volunteers, place election day signs on Lamar Blvd. before polls open on Tuesday morning, Nov. 6, 2012 in Austin, Texas. (AP Photo/Tamir Kalifa)