JetBlue Airways Corp pilots voted by a wide margin on Tuesday to join the Air Line Pilots Association union, sending the budget carrier’s stock price down on concerns the move would raise the airline’s costs. About 71 percent of the pilots eligible to vote in the month-long election backed ALPA. JetBlue has about 2,600 pilots and 96 percent were eligible to vote. […] JetBlue warned earlier this year costs would rise largely because of an agreement reached with pilots to raise base pay rates by 20 percent. JetBlue said that increase was expected to add $145 million to its costs...