Dehradun district in the southwest and make up % of the state's population. These three languages are closely related, with Garhwali and Kumaoni in particular making up the Central Pahari language subgroup. There are also sizeable populations of speakers of some of India's other major languages: Urdu (%) and Punjabi (%), both mostly found in the southern districts, Bengali (%) and Bhojpuri (%), both mainly present in Udham Singh Nagar district in the south-east, and Nepali (%, found throughout the state, but most notably in Dehradun and Uttarkashi). All the languages enumerated so far belong to the Indo-Aryan family. Apart from a few other minority Indo-Aryan languages, like Buksa Tharu and Rana Tharu (of Udham Singh Nagar district in the south-east), Mahasu Pahari (found in Uttarkashi in the north-west), and Doteli, Uttarakhand is also home to a number of indigenous Sino-Tibetan languages, most of which are spoken in the north of the state. These include Jad (spoken in Uttarkashi district in the north-west), Rongpo (of Chamoli district), and several languages of Pithoragarh district in the north-east: Byangsi, Chaudangsi, Darmiya, Raji and Rawat. Another indigenous Sino-Tibetan language, Rangas, became extinct by the middle of the 20th century. Additionally, two non-indigenous Sino-Tibetan languages are also represented: Kulung (otherwise native to Nepal) and Tibetan. Religion More than four-fifths of Uttarakhand's residents are Hindus. Muslims, Sikhs, Christians, Buddhists, and Jains make up the remaining population, with the Muslims being the largest minority. Hill regions are almost entirely Hindu, while the plains regions have a significant minority of Muslims and Sikhs. Government and politics Following the Constitution of India, Uttarakhand, like all Indian states, has a parliamentary system of representative democracy for its government. The Governor is the constitutional and formal head of the government and is appointed for a five-year term by the President of India on the advice of the Union government. The present Governor of Uttarakhand is Gurmit Singh. The Chief Minister, who holds the real executive powers, is the head of the party or coalition garnering the majority in the state elections. The current Chief Minister of Uttarakhand is Pushkar Singh Dhami. The unicameral Uttarakhand Legislative Assembly consists of 70 members, known as Members of the Legislative Assembly or MLAs, and special office bearers such as the Speaker and Deputy Speaker, elected by the members. Assembly meetings are presided over by the Speaker, or the Deputy Speaker in the Speaker's absence.