'Call of Duty' workers at Activision Blizzard vote to form union

FILE PHOTO: A crowd waits for a video presentation at the Activision booth during the 2014 Electronic Entertainment Expo, known as E3, in Los Angeles, California June 11, 2014. REUTERS/Jonathan Alcorn/File Photo

(Reuters) -A small group of Activision Blizzard workers voted for unionizing at a studio that works on the popular "Call of Duty" franchise, the second victory in a push to organize the video gaming industry.

Employees in the quality assurance department at Raven Software in Middleton, Wisconsin, voted 19-3 for joining the Communications Workers of America (CWA), according to a tally by U.S. National Labor Relation Board (NLRB) officials on Monday.