Union leaders expect a close vote when 3,000 Boeing hourly workers weigh a sweetened contract offer that could end an almost six-week strike, the union's chief said Tuesday.The vote will take place throughout Wednesday,

Boeing has made a new contract offer with a higher wage increase and other incentives in an attempt to end the strike. The union will vote Wednesday.

Boeing and its striking Seattle-area workers have reached a tentative deal to end a more than month-long stoppage, the union said Saturday.