In the early spring of 1973, Harrington resigned his membership in SDUSA. That same year, Harrington and his supporters formed the Democratic Socialist Organizing Committee (DSOC). At its start, DSOC had 840 members, of which 2 percent served on its national board, while approximately 200 had been members of SDUSA or its predecessors whose membership was then 1,800, according to a 1973 profile of Harrington. Its high-profile members included Congressman Ron Dellums and William Winpisinger, President of the International Association of Machinists. In 1982, DSOC established the Democratic Socialists of America (DSA) upon merging with the New American Movement, an organization of democratic socialists mostly from the New Left.