The St Catharines NDP Federal Riding Association represents the New Democratic Party in the St Catharines electoral district. The New Democratic Party began in 1956 when the Canadian Labour Congress and the Co-operative Commonwealth Federation (CCF) met to bring about an alliance between organized labour and the political left in Canada. In 1958 a joint CCF-CLC committee, the National Committee for the New Party (NCNP), was formed to create a "new" social democratic political party, with ten members from each group. The NCNP spent the next three years laying down the foundations of the New Party.
During this process, a large number of New Party Clubs were established to allow like-minded Canadians to join in its founding, and six representatives from New Party Clubs were added to the National Committee. In 1961, at the end of a five-day-long Founding Convention which established its principles, policies and structures, the New Democratic Party was born and Tommy Douglas, the long-time CCF Premier of Saskatchewan, was elected its first leader