2012 London mayoral election

Media reports alleged tension between Johnson and the national Conservative leadership as well as the Conservative-controlled central government. This might have led Johnson to seek a parliamentary seat to challenge these two entities rather than seek a second term as mayor.[5][6] However, on 10 September 2010, he announced his intention to stand for a second term.[7] At a re-selection meeting on 14 October 2010, he faced a period of questioning,[8] before being unanimously adopted as the Conservatives' candidate.[9]

The Labour Party candidate for Mayor was elected by an electoral college composed half-and-half of the votes of Labour members in London and the votes of affiliated organisations. The ballot papers were issued around early September 2010, and the winner was announced on 24 September.[10] Four people initially sought the nomination: Ken Livingstone, Oona King, Seton During and Emmanuel Okoro.[10]

Several Labour politicians such as Peter Mandelson, Tessa Jowell, Sadiq Khan, James Purnell, Lord Sugar, Alan Johnson, Tony McNulty and David Lammy were all touted as potential candidates, but none of these decided to run. Ken Livingstone had announced his intention to regain the mayoralty in March 2009 and said at the time that he would run as an independent if he failed to gain Labour's nomination, as he had done successfully in 2000.[11] Former MP and Channel 4 Diversity Officer Oona King announced her bid for the candidacy in May 2010.[12]

Prior to the vote, Livingstone gained the support of the GMB and Unite trade unions, as well as the backing of the majority of Labour members in the London Assembly. The Economist wrote that he was "by some distance the favourite to win the candidacy".[13]

On 24 September 2010, the Labour Party announced that Livingstone had defeated King for the nomination by a wide margin, the former mayor gaining 68.8% of the total votes.[14]

Around the beginning of September 2010, the Liberal Democrats started accepting applications for their nominee.[15] Lembit Öpik, Member of Parliament for Montgomeryshire from 1997 until his defeated re-election bid in 2010, said in June 2010 that he would like to be their candidate.[16] Liberal Democrat councillor Duwayne Brooks, a friend of murdered black teenager Stephen Lawrence who was with him when he died, also put himself forward.[17] Caroline Pidgeon, Floella Benjamin, Joanna Lumley, Brian Paddick and Susan Kramer were also seen as possible candidates . Jeremy Ambache, a former parliamentary candidate for Putney, also put his name down for selection for his party however he did not continue his campaign since he defected to Labour.

On 15 October 2010, plans for selecting a candidate were deferred for twelve months.[18] On 12 July 2011, the new shortlist of four candidates was announced. As a result of the announcement of the shortlist a High Court complaint was lodged by Patrick Streeter who was unsuccessful in being shortlisted. Subsequently, the High Court ruled the Liberal Democrats selection process fair and lawful.[19][20] The result was declared after a ballot of party members on 2 September.[21] The four candidates were Öpik, Paddick, Brian Haley and Mike Tuffrey. Haley is a councillor in Haringey and was a member of the Labour Party until defecting in January 2010.[22] Paddick was the party's candidate in 2008 and previously Deputy Assistant Commissioner of London's Metropolitan Police. Tuffrey led the Liberal Democrat group on the London Assembly between 2006 and 2010.

The Green Party announced its shortlist on 2 February 2011.[23] London members chose Assembly member Jenny Jones, who won 67%[24] of votes cast, over lecturer Shahrar Ali and writer Farid Bakht. Jenny Jones served as Deputy Mayor 2003–2004 during the first term of Ken Livingstone, when he was an Independent Mayor.

On 7 September 2011 the British National Party (BNP) announced London member Carlos Gerardo Cortiglia as its candidate, who is a press officer for the party. Cortiglia was born in Uruguay of Spanish and Italian ancestry and came to the United Kingdom in 1989.[25] He has previously taken part in a televised abortion debate on RT (Russia Today) in his capacity as press officer and was a list candidate for the party in the assembly elections in 2004.[26][27] He has worked for the BBC World Service and has been involved in several areas of the Foreign and Commonwealth Office, including television, radio and Internet via London Radio Service, British Satellite News, APTN and other media.[25][28]

On 2 June 2011, an email was sent to all UKIP members from the Executive Chairman setting out a timetable for selection and requesting applications from possible candidates. The party held an online poll, the results of which influenced the final vote. The six candidates were David Coburn, Michael Corby, Michael McGough, Paul Oakley, Winston McKenzie and Lawrence Webb. On 5 September 2011, Webb was selected by London members as the UKIP candidate.[29][30] However, he stood under the description "Fresh Choice for London" rather than under the party label.[31] This, the New Statesman revealed, was because of an error by the party, which forgot to put its name on the nomination papers.[32]

Ex-senior civil servant Siobhan Benita ran as an independent.[33]

Jenny Jones launched her mayoral campaign as the Green Party candidate on 16 October 2011[43] with the release of a mini manifesto.[44]

Benita's supporters complained at her exclusion from several debates.[45][46]

UKIP candidate Lawrence Webb was listed as 'Fresh Choice for London' rather than as the UK Independence Party on the ballot paper, albeit with the UKIP logo, after they filled in nomination papers incorrectly.[47] UKIP leader Nigel Farage was described as "furious" at this, saying it was a "cockup" which cost UKIP votes.[48]

Cortiglia with members of the public

Cortiglia's core policies included free weekend travel on public transport and a minimum five-year prison term for knife crime.[49][50] However, his candidacy was marked by controversy over a 2003 interview, in which Cortiglia is quoted:

Soy argentino oriental, o dicho de otro modo, uruguayo de nacimiento, y me siento muy ligado emocionalmente a la República Argentina. En 1982 me ofrecí como voluntario para ir a las Islas Malvinas. Todo nació de mi gran interés por la historia y por haber crecido nutrido por los ideales de lo que podría haber sido y finalmente no fue. Esto me llevó finalmente a involucrarme en la carrera periodística que, en definitiva, fue lo que me trajo al Reino Unido.[51]

That is, Cortiglia said that, feeling an emotional connection to Argentina, in 1982, he had volunteered to go to the Falkland Islands, which was interpreted as showing support for Argentina in the Falklands War.[52] In 2011, Cortiglia labelled the erroneous suggestion that he had fought for Argentina[53] as "far left fabrication" and explained the quote in La Nación so:

As a State employee and as a Uruguayan (not as a British citizen), I made a public pronouncement expressing the position of the Uruguayan government. If Argentina had suspected, at any point in time, that Uruguay would be siding with Britain or helping Britain, Uruguayan neutrality would have been compromised.[54]

Cortiglia explained his reasons for joining the British National Party in a statement introducing his candidacy:

I want to help preserve the freedoms, values and traditions that help make this a great country to live in. That's why I joined the British National Party twelve years ago. I wanted to pay back the country that has been so kind to me and my family. I wanted to work with others who felt the same way as me.[55]

• Polly Toynbee, journalist and writer[56]
• Rabbi Danny Rich, chief executive of Liberal Judaism in the UK[57]
• George Galloway, RESPECT politician[58]
• Mehdi Hasan, political journalist, commentator and author[59]
• Richard Rogers[60]
• Owen Jones, newspaper columnist, commentator and author[61]
• Steve Richards, television presenter and newspaper columnist[62]

• Dan Hodges, Labour member and newspaper columnist[63]
• Ivan Massow

Under the supplementary vote system used in the election, the voters were invited to express a first and a second preference. Some mayoral candidates had explicitly recommended how their supporters should use their second preference. The membership of the London Green Party voted to recommend that their supporters rank Livingstone second; Jenny Jones had previously been Livingstone's deputy mayor in his first term. Johnson's campaign described Livingstone as planning a coalition with the Greens.[70]

Having initially recommended a second preference for independent candidate Benita, UKIP switched to urging a second preference for Johnson, criticising Benita as having "New Labour" leanings.[71] Paddick and the Liberal Democrats said they would not "patronise our supporters by telling them how to use their second preference."[70]

The BNP candidate, Cortiglia, had said he was giving his second preference vote to Livingstone.[72]