Delta Flight Attendant Union Rejection May Be Upended

Delta Air Lines Inc. flight attendants’ vote to reject union representation may be nullified by a U.S. labor board controlled by Obama administration appointees, according to a senator and an analyst.

The National Mediation Board, which in August ordered a new election for technicians who work on simulators for Delta, will take similar action after reviewing flight-attendant allegations of company interference in balloting, said Ray Neidl, an analyst at Maxim Group LLC in New York. “The deck is stacked in the union’s favor,” he said in an interview.