The New Democratic Party of Manitoba (Nouveau Parti démocratique du Manitoba) is a social-democratic political party in Manitoba, Canada. It is the provincial wing of the federal New Democratic Party, and is a successor to the Manitoba Co-operative Commonwealth Federation. It is currently the opposition party in Manitoba. In the federal election of 1958, the national Co-operative Commonwealth Federation (CCF) was reduced to only eight seats in the House of Commons of Canada. The CCF's leadership restructured the party during the next three years, and in 1961 it merged with the Canadian Labour Congress to create the New Democratic Party (NDP). Most provincial wings of the CCF also transformed themselves into "New Democratic Party" organisations before the year was over, with Saskatchewan as the only exception. There was very little opposition to the change in Manitoba, and the Manitoba NDP was formally constituted on November 4, 1961. Future Manitoba NDP leader Howard Pawley was one of the few CCF members to oppose the change. Outgoing CCF leader Russell Paulley easily won the new party's leadership, defeating two minor figures who offered little in the way of policy alternatives. For all intents and purposes, the CCF caucus in the Manitoba Legislative Assembly became the NDP caucus. The NDP did not initially achieve an electoral breakthrough in Manitoba, falling from eleven seats to seven in the provincial election of 1962. They recovered to ten seats in the 1966 election, but were still unable to seriously challenge Dufferin Roblin's Progressive Conservative government. Many in the NDP considered Paulley's leadership a liability, especially after the 1966 election. Paulley was known as an old-style labour politician, and could not appeal to the broader constituency base that the party needed for an electoral breakthrough. In 1968, he was challenged for the party leadership by Sidney Green, a labour lawyer from north-end Winnipeg.