Question: What is the Labour party politician who participated in Tower Block of Commons  Chair of?

Context articles: Ad Melkert
Austin Mitchell
Labour Party (UK) Shadow Cabinet election, 1991
Tower Block of Commons
Labour Party (UK) Shadow Cabinet election, 1992
Anthony Crosland
Labour Party (UK) Shadow Cabinet election, 1990
Labour Party (UK) Shadow Cabinet election, 1993
Konni Zilliacus
Labour Party (UK) Shadow Cabinet election, 1994

Adrianus Petrus Wilhelmus "Ad" Melkert (] ; born 12 February 1956) is a Dutch politician and diplomat of the Labour Party (PvdA).
 He served as a Member of the House of Representatives from 3 June 1986 until 22 August 1994 when he became Minister of Social Affairs and Employment in the Cabinet Kok I following the Dutch general election of 1994.
 At the end of the parliamentary period, he was not included in the Cabinet Kok II after the Dutch general election of 1998 by his own request, as he wanted to focus his energies on his candidacy to succeed Wim Kok as the next Party leader of the Labour Party.
 Melkert returned to the Member of the House of Representatives on 13 July 1998 and became the Parliamentary leader of the Labour Party in the House of Representatives on 13 July 1998 and became the presumed de facto next Party leader of the Labour Party in all but name.
 He was elected the official Party leader of the Labour Party on 15 December 2001 and became the lijsttrekker (top candidate) for the Dutch general election of 2002.
Austin Vernon Mitchell (born 19 September 1934) is a British Labour Party politician who was the Member of Parliament for Great Grimsby from a 1977 by-election to 2015.
 He is the Chair of the Labour Euro-Safeguards Campaign.
Elections to the Labour Party's Shadow Cabinet took place on 23 October 1991.
 Under the rules then in effect, the Commons members of the Parliamentary Labour Party elected 18 members of the Official Opposition Shadow Cabinet, who were then assigned portfolios by the leader.
 The Commons members of the PLP separately elected the Chief Whip, and the Labour peers elected the Leader of the Opposition in the House of Lords.
 In addition, the Leader of the Labour Party and Deputy Leader (Neil Kinnock and Roy Hattersley, respectively) were members by virtue of those offices.
Tower Block of Commons is a British four-episode reality documentary show produced by Love Productions and broadcast on Channel 4 in 2010 where four Members of Parliament (MPs) have to spend time living in a variety of deprived housing estates around Britain.
 The four MPs who participated were Austin Mitchell (Labour), Mark Oaten (Liberal Democrat), Tim Loughton and Nadine Dorries (both Conservative).
 In the first episode, Iain Duncan Smith appears but Dorries appears in his place for the remainder of the three episodes.
 Duncan Smith's exit from the show followed his wife being diagnosed with cancer.
Elections to the Labour Party's Shadow Cabinet took place in July 1992.
 Shadow Cabinet elections generally take place at the beginning of a parliamentary session, but the 1992 vote was postponed until a new leader was elected to replace Neil Kinnock.
 Under the rules then in effect, the Commons members of the Parliamentary Labour Party elected 18 members of the Official Opposition Shadow Cabinet, who were then assigned portfolios by the leader.
 The Commons members of the PLP separately elected the Chief Whip, and the Labour peers elected the Leader of the Opposition in the House of Lords.
 In addition, the Leader of the Labour Party and Deputy Leader (John Smith and Margaret Beckett, respectively) were members by virtue of those offices.
 The 18 elected members of the Shadow Cabinet were the ones with the largest number of votes, except that the three women with the most votes would be included in the 18, even if they weren't among the 18 top vote getters.
Charles Anthony Raven Crosland (29 August 1918 – 19 February 1977), otherwise Tony Crosland or C.A.R. Crosland, was a British Labour Party politician and author.
 He served as Member of Parliament for South Gloucestershire and later for Great Grimsby.
 Throughout his long career he occupied the cabinet positions of Secretary of State for Education and Science, President of the Board of Trade, Secretary of State for Local Government and Regional Planning and Foreign Secretary.
 A prominent socialist intellectual, he became one of the Labour Party's revisionists on the right, as an intellectual leader of Gaitskellism.
 His highly influential book "The Future of Socialism" (1956) argued against many Marxist notions and Labour Party orthodoxy that public ownership was essential to make socialism work.
 He offered positive alternatives to both right and left wings of his Labour Party.
 He questioned the need for public ownership of the means of production – the classic socialist formulation – and argued instead for making the highest priority the end of poverty and improved public services.
 He led the Labour battle to replace grammar schools with comprehensive schools that did not sort students at age 11.
 As foreign secretary he promoted détente with the Soviet Union.
Elections to the Labour Party's Shadow Cabinet took place on 24 October 1990.
 Under the rules then in effect, the Commons members of the Parliamentary Labour Party elected 18 members of the Official Opposition Shadow Cabinet, who were then assigned portfolios by the leader.
 The Commons members of the PLP separately elected the Chief Whip, and the Labour peers elected the Leader of the Opposition in the House of Lords.
 In addition, the Leader of the Labour Party and Deputy Leader (Neil Kinnock and Roy Hattersley, respectively) were members by virtue of those offices.
Elections to the Labour Party's Shadow Cabinet took place in October 1993, at the beginning of the 1993/4 session of parliament.
 Under the rules then in effect, the Commons members of the Parliamentary Labour Party elected 18 members of the Official Opposition Shadow Cabinet, who were then assigned portfolios by the leader.
 The Commons members of the PLP separately elected the Chief Whip, and the Labour peers elected the Leader of the Opposition in the House of Lords.
 In addition, the Leader of the Labour Party and Deputy Leader (John Smith and Margaret Beckett, respectively) were members by virtue of those offices.
 The 18 elected members of the Shadow Cabinet were the ones with the largest number of votes.
 Beginning with this election, MPs were required to vote for at least four women, but women were no longer guaranteed three places in the Shadow Cabinet.
Konni Zilliacus (13 September 1894 – 6 July 1967) was a left-wing Labour Party politician in the United Kingdom.
 Of Finnish and American parentage, he spoke nine languages fluently; international issues were to absorb much of his energy, both as an official of the League of Nations between the wars, and as a Labour member of the House of Commons in the post-War period.
 Zilliacus's extensive contacts with figures in Eastern Europe during the Cold War era, together with his frequent support for positions promoted by the Soviet Union, periodically brought him into conflict with the Labour Party leadership and in 1949 led to his expulsion from the party.
 In 1950 he lost his seat in parliament, was re-admitted by Labour in 1952, and returned to the Commons in 1955.
 He was widely regarded as, at least, a fellow traveller.
 He was, however, a self-proclaimed anti-Communist who never belonged to the Communist Party, and who occasionally adopted positions opposed to Moscow's line, for example during Stalin's conflict with Tito.
Elections to the Labour Party's Shadow Cabinet took place in October 1994, at the beginning of the 1994/5 session of parliament.
 Under the rules then in effect, the Commons members of the Parliamentary Labour Party elected 18 members of the Official Opposition Shadow Cabinet, who were then assigned portfolios by the leader.
 The Commons members of the PLP separately elected the Chief Whip, and the Labour peers elected the Leader of the Opposition in the House of Lords.
 In addition, the Leader of the Labour Party and Deputy Leader (Tony Blair and John Prescott, respectively) were members by virtue of those offices.
 The 18 elected members of the Shadow Cabinet were the ones with the largest number of votes.
 MPs were required to vote for at least four women, but women were not necessarily guaranteed places in the Shadow Cabinet.