New Party was the interim name used by the new political party being established in Canada from 1958 to 1961 by the Co-operative Commonwealth Federation (CCF) and the Canadian Labour Congress (CLC), which eventually defined itself as a social democratic party. In 1958 a joint CCF-CLC committee, the National Committee for the New Party (NCNP), was formed and spent the next three years laying down the foundations of the 'New Party'. During the process of founding the party, the New Party name was used in the October 1960 Peterborough, Canadian federal by-election; which was won by its candidate, Walter Pitman. In August 1961, at the end of a five-day long convention, the New Democratic Party (NDP) was born and T.C. 'Tommy' Douglas was elected its first leader. Once the NDP was formed, the New Party clubs, and affiliates automatically ceased, and became part of newly formed party.
Azoulay, Dan (1999). "A Desperate Holding Action: The Survival of the Ontario CCF/NDP, 1948–1964". In Azoulay, Dan. Canadian political parties:historical readings. Toronto: Irwin Publishing. pp. 342–363. ISBN0-7725-2703-2.
Boyko, John (2006). Into the Hurricane: Attacking Socialism and the CCF. Winnipeg, Canada: J. Gordon Shillingford Publishing Inc. ISBN1-897289-09-X.