2005 Conservative Party leadership election in the context of "Conservative Party (UK)"

David William Donald Cameron, Baron Cameron of Chipping Norton (born 9 October 1966), is a British politician who served as Prime Minister of the United Kingdom from 2010 to 2016. Until 2015, he led the first coalition government in the UK since 1945 and resigned after a referendum supported the country's leaving the European Union. After his premiership, he served as Foreign Secretary in the government of prime minister Rishi Sunak from 2023 to 2024. Cameron was Leader of the Conservative Party from 2005 to 2016 and served as Leader of the Opposition from 2005 to 2010. He was Member of Parliament (MP) for Witney from 2001 to 2016, and has been a member of the House of Lords since November 2023. Cameron identifies as a one-nation conservative and has been associated with both economically liberal and socially liberal policies.

Born in London to an upper-middle-class family, Cameron was educated at Eton College and Brasenose College, Oxford. After becoming an MP in 2001, he served in the opposition Shadow Cabinet under Conservative leader Michael Howard, and succeeded Howard in 2005. Following the 2010 general election, negotiations led to Cameron becoming prime minister as the head of a coalition government with the Liberal Democrats.

The Conservative and Unionist Party, commonly the Conservative Party and colloquially the Tories, is one of the two main political parties in the United Kingdom, along with the Labour Party. It sits on the centre-right to right-wing of the left–right political spectrum. Following its defeat by Labour at the 2024 general election it is currently the second-largest party by the number of votes cast and number of seats in the House of Commons; as such it has the formal parliamentary role of His Majesty's Most Loyal Opposition. It encompasses various ideological factions including one-nation conservatives, Thatcherites and traditionalist conservatives. There have been 20 Conservative prime ministers.

The Conservative Party was founded in 1834 from the Tory Party and was one of two dominant political parties in the 19th century, along with the Liberal Party. Under Benjamin Disraeli it played a preeminent role in politics at the height of the British Empire. In 1912 the Liberal Unionist Party merged with the party to form the Conservative and Unionist Party. Its rivalry with the Labour Party has shaped modern British politics for the last century. David Cameron sought to modernise the party after his election as leader in 2005, and the party governed from 2010 to 2024 under five prime ministers, latterly Rishi Sunak.

David Cameron was Leader of the Conservative Party and Leader of the Opposition from his election as Leader on 6 December 2005 until he became Prime Minister on 11 May 2010. His tenure as opposition leader was characterised by opposition to the Great Recession from 2007 to 2009, and his relative youth and inexperience before becoming leader invited satirical comparison with Tony Blair. Cameron sought to rebrand the Conservatives, embracing an increasingly socially liberal position, and introducing the "A-List" to increase the number of female and minority ethnic Conservative MPs.

Cameron had four Shadow Cabinets during his tenure as opposition leader. His Shadow Cabinet appointments included MPs associated with the various wings of the party. Former leader William Hague was appointed to the Foreign Affairs brief, while both George Osborne and David Davis were retained, as Shadow Chancellor of the Exchequer and Shadow Home Secretary respectively. Hague, assisted by Davis, stood in for Cameron during his paternity leave in February 2006. In June 2008, Davis announced his intention to resign as an MP, and was immediately replaced as Shadow Home Secretary by Dominic Grieve; Davis' surprise move was seen as a challenge to the changes introduced under Cameron's leadership.

The Conservative A-List, also called Priority List, was a list of United Kingdom candidates drawn up by Conservative Central Office at the behest of David Cameron following his election as party leader in December 2005, aimed as a means of broadening the number of Conservative Members of Parliament, potential peers and MEPs from minority groups and women as well as other preferred candidates for candidature. Where the preferred forums for selection were held, at least two members from the list were put to every open primary, and where these were not held the A-list were recommended directly, particularly to the top target seats.

Cameron Cutie was a term used for female candidates.