CHESAPEAKE, Va. – By the time Barack Obama is ready to announce his vice presidential pick, will anyone believe him? In recent days, as speculation and anticipation has mounted, so too have phony text messages declaring Obama’s supposed running mate – from Evan Bayh and Hillary Rodham Clinton to Olympic gold medalist Michael Phelps. It’s a cruel twist in a prolonged game of guessing that has put political junkies and Democratic supporters on edge since the campaign announced last week that it would disclose Obama’s choice through text messaging, which is expected to happen by Saturday. In the absence of...