The Government of India (ISO: Bhārat Sarkār; often abbreviated as GoI), known as the Union Government or Central Government but often simply as the Centre,[a] is the national government of the Republic of India, a federal democracy located in South Asia, consisting of 28 union states and eight union territories.

Under the Constitution, there are three primary branches of government: the legislative, the executive and the judiciary, whose powers are vested in a bicameral Parliament, President, aided by the Council of Ministers, and the Supreme Court respectively.

Through judicial evolution, the Parliament has lost its sovereignty as its amendments to the Constitution are subject to judicial intervention. Judicial appointments in India are unique in that the executive or legislature have negligible say.

Source: Wikipedia