<Tr> <Th> Formation </Th> <Td> 11 February 1946 </Td> </Tr> <P> The Chief Minister of Assam, a northeast Indian state, is the head of the Government of Assam . As per the Constitution of India, the governor is the state's de jure head, but de facto executive authority rests with the chief minister . Following elections to the Assam Legislative Assembly, the governor usually invites the party (or coalition) with a majority of seats to form the government . The governor appoints the chief minister, whose council of ministers are collectively responsible to the assembly . Given that he has the confidence of the assembly, the chief minister's term is for five years and is subject to no term limits . </P> <P> Since 1946, Assam has had 14 chief ministers . Ten of these belonged to the Indian National Congress, including Gopinath Bordoloi, the first Chief Minister of Assam, and Anwara Taimur, India's first female Muslim chief minister . Congressman Tarun Gogoi is the longest - serving officeholder, having served for 15 years from 2001 to 2016 . Current incumbent Sarbananda Sonowal became the Assam's first chief minister from the Bharatiya Janata Party when he was sworn - in on 24 May 2016 . </P> <Table> <Tr> <Th> No </Th> <Th> Name </Th> <Th_colspan="2"> Term of office </Th> <Th_colspan="2"> Party </Th> <Th> Days in office </Th> </Tr> <Tr> <Td> </Td> <Td> Gopinath Bordoloi </Td> <Td> 11 February 1946 </Td> <Td> 6 August 1950 </Td> <Td> Indian National Congress </Td> <Td> </Td> <Td> 1,638 </Td> </Tr> <Tr> <Td> </Td> <Td> Bishnu Ram Medhi MLA for Hajo </Td> <Td> 9 August 1950 </Td> <Td> 27 December 1957 </Td> <Td> 2,698 </Td> </Tr> <Tr> <Td> </Td> <Td> Bimala Prasad Chaliha MLA for Sonari </Td> <Td> 28 December 1957 </Td> <Td> 6 November 1970 </Td> <Td> 4,696 </Td> </Tr> <Tr> <Td> </Td> <Td> Mahendra Mohan Choudhry MLA for Gauhati East </Td> <Td> 11 November 1970 </Td> <Td> 30 January 1972 </Td> <Td> 446 </Td> </Tr> <Tr> <Td> </Td> <Td> Sarat Chandra Sinha MLA for Kokrajhar East </Td> <Td> 31 January 1972 </Td> <Td> 12 March 1978 </Td> <Td> 2,232 </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Golap Borbora MLA for Tinsukia </Td> <Td> 12 March 1978 </Td> <Td> 4 September 1979 </Td> <Td> Janata Party </Td> <Td> </Td> <Td> 542 </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Jogendra Nath Hazarika MLA for Duliajan </Td> <Td> 9 September 1979 </Td> <Td> 11 December 1979 </Td> <Td> 94 </Td> </Tr> <Tr> <Td>--</Td> <Td> Vacant (President's rule) </Td> <Td> 12 December 1979 </Td> <Td> 5 December 1980 </Td> <Td> N / A </Td> <Td> </Td> <Td> 359 </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Anwara Taimur MLA for Dalgaon </Td> <Td> 6 December 1980 </Td> <Td> 30 June 1981 </Td> <Td> Indian National Congress </Td> <Td> </Td> <Td> 207 </Td> </Tr> <Tr> <Td>--</Td> <Td> Vacant (President's rule) </Td> <Td> 30 June 1981 </Td> <Td> 13 January 1982 </Td> <Td> N / A </Td> <Td> </Td> <Td> 197 </Td> </Tr> <Tr> <Td> 9 </Td> <Td> Kesab Chandra Gogoi MLA for Dibrugarh </Td> <Td> 13 January 1982 </Td> <Td> 19 March 1982 </Td> <Td> Indian National Congress </Td> <Td> </Td> <Td> 66 </Td> </Tr> <Tr> <Td>--</Td> <Td> Vacant (President's rule) </Td> <Td> 19 March 1982 </Td> <Td> 27 February 1983 </Td> <Td> N / A </Td> <Td> </Td> <Td> 345 </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Hiteswar Saikia MLA for Nazira </Td> <Td> 27 February 1983 </Td> <Td> 23 December 1985 </Td> <Td> Indian National Congress </Td> <Td> </Td> <Td> 1,031 </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Prafulla Kumar Mahanta MLA for Nowgong </Td> <Td> 24 December 1985 </Td> <Td> 28 November 1990 </Td> <Td> Asom Gana Parishad </Td> <Td> </Td> <Td> 1,799 </Td> </Tr> <Tr> <Td>--</Td> <Td> Vacant (President's rule) </Td> <Td> 28 November 1990 </Td> <Td> 30 June 1991 </Td> <Td> N / A </Td> <Td> </Td> <Td> 214 </Td> </Tr> <Tr> <Td> (10) </Td> <Td> Hiteswar Saikia (2) MLA for Nazira </Td> <Td> 30 June 1991 </Td> <Td> 22 April 1996 </Td> <Td> Indian National Congress </Td> <Td> </Td> <Td> (Total 2,788) 1,757 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Bhumidhar Barman MLA for Barkhetry </Td> <Td> 22 April 1996 </Td> <Td> 14 May 1996 </Td> <Td> 23 </Td> </Tr> <Tr> <Td> (11) </Td> <Td> Prafulla Kumar Mahanta (2) MLA for Barhampur </Td> <Td> 15 May 1996 </Td> <Td> 17 May 2001 </Td> <Td> Asom Gana Parishad </Td> <Td> </Td> <Td> (Total 3,628) 1,829 </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Tarun Gogoi MLA for Titabar </Td> <Td> 17 May 2001 </Td> <Td> 24 May 2016 </Td> <Td> Indian National Congress </Td> <Td> </Td> <Td> 5,485 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Sarbananda Sonowal MLA for Majuli </Td> <Td> 24 May 2016 </Td> <Td> Incumbent </Td> <Td> Bharatiya Janata Party </Td> <Td> </Td> <Td> 675 </Td> </Tr> </Table>

What is the name of chief minister of assam