Politics of Saint Helena takes place in a framework of limited self-government as a dependent territory of the United Kingdom, whereby the Governor is the head of government. Saint Helena, an island in the southern Atlantic Ocean, is a part of the British overseas territory of Saint Helena, Ascension and Tristan da Cunha.
It has had its present constitution since 1 September 2009. Executive power is exercised by the Governor and the Executive Council. Legislative power is vested in both the Governor and the Legislative Council. The judiciary is independent of the executive and the legislature. Military defence is the responsibility of the United Kingdom.
Saint Helena had until 2009 two dependencies: Ascension Island and Tristan da Cunha. These territories have their own political structures with Administrators under the Governor of Saint Helena. They are now equal parts of Saint Helena, Ascension and Tristan da Cunha along with St Helena itself.
The Executive Council consists of the Governor, three ex officio officers (one, the Attorney General, having no vote), and five elected members of the Legislative Council. The monarch is the reigning monarch of the United Kingdom and is hereditary; the Governor is appointed by the monarch on the advice of the British government. The Chief Secretary is the main advisor to the Governor on the island and runs the administrative side of the government, which is based at The Castle in the capital, Jamestown.