By Bill Rigby SEATTLE (Reuters) – A small group of Amazon.com Inc technicians at a distribution center in Delaware voted on Wednesday not to join a union, marking a victory for the U.S. online retailer which is strongly opposed to any kind of third-party representation for its employees. The vote was a symbolic test of Amazons employee relations policies, but did not affect the vast majority of the 1,500 or so packers and shippers who work at the Middletown, Delaware facility, one of more than 40 distribution centers in the United States. Our employees have made it clear that they prefer a direct connection with Amazon, said Mary Osako, an Amazon spokeswoman, in an emailed statement. John Carr, a representative of the IAM, said Amazon had worked behind the scenes to sway workers.