The national union organizing effort among Starbucks workers arrived in the Triangle this week, as employees of a Raleigh Starbucks filed petitions to seek union representation. Workers at the Midtown East Starbucks, at 2901 Sherman Oak Place off of Wake Forest Road, submitted files to the National Labor Relations Board of their plans seeking a union through Workers United, an affiliate of the Service Employees International Union. This growing interest in Starbucks unions started late last year in Buffalo, NY, as workers there voted to form the company’s first union. That effort has kicked off a wave of organizing at Starbucks locations across the nation. The Raleigh Starbucks marks the 87th location so far to attempt to organize its workers, according to a press release from the SIEU.