Question:  The Lovestoneites were led by a leader of what USA party?

Context paragraphs:
Co-operative Commonwealth Federation (Ontario): The Co-operative Commonwealth Federation (Ontario) – The Farmer-Labor Party of Ontario, or more commonly known as the Ontario CCF, was a democratic socialist political party that existed from 1932 to 1961.  It was the provincial wing of the national CCF.  The party had no leader in the beginning, and was governed by a provincial council and executive.  The party first Member of the Legislative Assembly (MLA) was elected by voters in the 1934 Ontario general election.  In the 1937 general election, no CCF members were elected to the Ontario Legislature.  In 1942, the party elected Toronto lawyer Ted Jolliffe as its first leader.  He led the party to within a few seats of forming the government in the 1943 general election; instead, it formed the Official Opposition.  In that election, the first two women were elected as CCFers to the Ontario Legislature, Agnes Macphail and Rae Luckock.  The 1945 election was a setback, as the party lost most of its seats in the Legislature, including Jolliffe's seat.  The party again became the Official Opposition after the 1948 general election, and defeated the Conservative premier George Drew in hisseat, when Bill Temple unexpectedly won in the High Park constituency.  The middle and late 1940s were the peak years for the Ontario CCF.  After that time, its electoral performances were dismal, as it was reduced to a rump of two seats in the 1951 election, three seats in the 1955 election, and five seats in the 1959 election.  Jolliffe stepped down as leader in 1953, and was replaced by Donald C. MacDonald.

Conservative Party (UK): The Conservative Party, officially the Conservative and Unionist Party, is a centre-right political party in the United Kingdom.  It is currently the governing party, having been so since the 2010 general election, where a coalition government with the Liberal Democrats was formed.  In 2015, the Conservatives led by David Cameron won a surprise majority and formed the first Conservative majority government since 1992.  However, the 2017 snap election on Thursday 8 June resulted in a hung parliament, and the Conservatives lost their parliamentary majority.  They are reliant on the support of a Northern Irish political party, the Democratic Unionist Party (DUP), in order to command a majority in the House of Commons through a confidence-and-supply deal.  The party leader, Theresa May, has served as both Leader of the Conservative Party and Prime Minister since 13 July 2016.  It is the largest party in local government with 9,237 councillors.  The Conservative Party is one of the two major contemporary political parties in the United Kingdom, the other being its modern rival, the Labour Party.  The Conservative Party's platform involves support for free market capitalism, free enterprise, fiscal conservatism, a strong national defence, deregulation, and restrictions on trade unions.

Peter Cacchione: Peter V. "Pete" Cacchione (November 1, 1897 – November 6, 1947) was a communist labor leader who was elected to the New York City Council in 1941.  He was born to Italian-American immigrant family in Syracuse, New York on November 1, 1897 and grew up in Sayre, Pennsylvania.  He became director of sports activities for the Catholic Welfare Council, later becoming a steel worker in Bethlehem, a street car conductor, riveter and later a trainman on the Lackawanna Railroad.  According to fellow communist city councilman Benjamin J. Davis and newspaper accounts, Cacchione served in World War I.  Cacchione joined the Communist Party USA in 1932 and led a delegation of the communist affiliated Workers Ex-Service Men's League in the 1932 Washington D.C. bonus march.  He became National Commander of the League in 1935.  Cacchione moved to New York City, Bronx, in 1932 and was later elected Bronx County Chairman of the Communist Party USA in 1934.  After relocating to Brooklyn, he was elected Kings County Chairman of the Communist Party in 1936.

Grant Mitton (politician): Grant Mitton (born 1941) is a former radio talk show host on CJDC (AM) Radio's open line program and political leader in British Columbia, Canada.  On March 7, 2001, he was appointed a vice president of the Reform Party of British Columbia, and he was a candidate of the British Columbia Social Credit Party in the 2001 provincial election in Peace River South, placing second with 1,726 votes, 17.33% of the total.  He became leader of the Social Credit Party, but then left it to join the British Columbia Party as a "traditional conservative party", hoping to attract support from conservatives, particularly social conservatives dissatisfied with the policies of the ruling British Columbia Liberal Party.  He led the party during the 2005 election.  The party nominated only two candidates who won 362 votes.  Mitton did not run in the election.  He subsequently left the BC Party, and joined the British Columbia Conservative Party.

Jay Lovestone: Jay Lovestone (December 15, 1897 – March 7, 1990) was at various times a member of the Socialist Party of America, a leader of the Communist Party USA, leader of a small oppositionist party, an anti-Communist and Central Intelligence Agency (CIA) helper, and foreign policy advisor to the leadership of the AFL-CIO and various unions within it.

Praja Socialist Party: The Praja Socialist Party (PSP) is an Indian political party.  It was founded when the Socialist Party, led by Jayprakash Narayan, Acharya Narendra Deva and Basawon Singh (Sinha), merged with the Kisan Mazdoor Praja Party led by J.B. Kripalani (former President of the Indian National Congress and a close associate of Jawaharlal Nehru).  It led the cabinet under Pattom A. Thanu Pillai as chief minister of Travancore-Cochin from March 1954 to February 1955.  A section led by Rammanohar Lohia broke from the party in 1955, resuming the name "Socialist Party".  .  It again came to power in the new state of Kerala under Pattom A. Thanu Pillai from February 1960 to September 1962.  Another section of the party, led by the trade union leader George Fernandes, broke off to become the Samyukta Socialist Party in 1969.  In 1960, Kripalani left the party and in 1964, Asoka Mehta joined Congress after his expulsion from the party.  In 1972, a section merged with Fernandes' party to become the Socialist Party once more, before becoming part of the Janata coalition following the Emergency in 1977.

Oliver Badman: Albert Oliver Badman (18 December 1885 – 24 April 1977) was an Australian politician.  Born in Yacka, South Australia, he was educated at state schools before becoming a wheat farmer and wheat breeder.  He was a Methodist lay preacher and President of the South Australian Country Party before entering Parliament.  In 1931, he was elected to the Australian Senate for South Australia, representing the Country Party.  In 1937, Badman transferred to the House of Representatives, winning the seat of Grey.  The United Australia Party (UAP) did not contest the seat as the Country Party had agreed to allow the UAP's sitting member for Grey, Philip McBride, to take Badman's place in the Senate.  Together with fellow Country Party members Arthur Fadden, Bernard Corser and Thomas Collins, Badman dissociated himself from party leader Earle Page after the latter made attacks on the leader of the UAP, Robert Menzies; the exclusion of these four led to the election of Page supporter Archie Cameron as the party's next leader.  In 1940, Cameron defected to the UAP, and the Country Party in South Australia ceased to exist; Badman became, in effect, a UAP member.  He was defeated in 1943, and returned to farming.  He was President of the Primary Producers' Union of South Australia from 1954 to 1961.  Badman died in 1977.

Lovestoneites: The Lovestoneites, led by former General Secretary of the Communist Party USA (CPUSA) Jay Lovestone, were a small American oppositionist Communist movement of the 1930s.  The organization emerged from a factional fight in the CPUSA in 1929 and unsuccessfully sought to reintegrate with that organization for several years.

Robert Stanfield: Robert Lorne Stanfield, PC, QC (April 11, 1914 – December 16, 2003) was the 17th Premier of Nova Scotia and leader of the federal Progressive Conservative Party of Canada.  He was born into an affluent Nova Scotia clothing manufacturing and political family in 1914.  He graduated from Dalhousie University and Harvard Law School in the 1930s.  Stanfield became the leader of the Nova Scotia Progressive Conservative Party in 1948, and after a rebuilding period, led the party to government in 1956.  As premier, he won three straight elections.  His government was credited with modernizing the way the province delivered education and medical services.  In 1967, he resigned as premier and became the leader of the federal Progressive Conservative Party.  He was the leader of the "Her Majesty's Loyal Opposition" and fought three general elections, losing each time to the Liberals under Pierre Trudeau.  He resigned as leader in 1976 and from public office in 1979.  In retirement, he lived mostly in Ottawa, and died there in 2003 from complications due to pneumonia.  He is sometimes referred to as "the best prime minister Canada never had".  As one of Canada's most distinguished and respected statesmen, he was one of several people granted the style "The Right Honourable" who were not so entitled by virtue of an office held.

David Swann: David Richard Swann, {'1': ", '2': ", '3': ", '4': "} (born June 19, 1949) is a medical doctor and Canadian politician.  He currently serves as the Member of the Legislative Assembly of Alberta for Calgary-Mountain View, and is a member of the Liberal Party.  He was the leader of the Alberta Liberal Party and Leader of the Opposition in the Alberta Legislature from December 2008 until resigning as party leader in September 2011.  He returned as interim leader of the Alberta Liberal Party on February 1, 2015, following the resignation of Raj Sherman and led the party through the 2015 provincial election.

Supporting paragraphs: Lovestoneites Jay Lovestone
Answer: Communist Party USA