Campaign worker Erin Callahan from New York, left, is seen through the store windows texting on her phone at the Republican National Convention in Tampa, Fla., on Monday, Aug. 27, 2012.

 

              Campaign worker Erin Callahan from New York, left, is seen through the store windows texting on her phone at the Republican National Convention in Tampa, Fla., on Monday, Aug. 27, 2012.
Campaign worker Erin Callahan from New York, left, is seen through the store windows texting on her phone at the Republican National Convention in Tampa, Fla., on Monday, Aug. 27, 2012. (AP Photo/Jae C. Hong)