The Conservative Party (officially the Conservative and Unionist Party) is currently the second largest political party in the United Kingdom in terms of sitting Members of Parliament (MPs), the largest in terms of public membership, and the oldest political party in the United Kingdom. It is the most successful political party in British history in terms of election victories, and is widely considered to be the most successful political party in the world. The current leader is David Cameron, who as Her Majesty's Loyal Leader of the Opposition heads the Shadow Cabinet.
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