<P> Of the thirty - one incumbents, three are women--Mamata Banerjee in West Bengal, Mehbooba Mufti in Jammu and Kashmir, and Vasundhara Raje in Rajasthan . Serving since December 1994 (for 7003830900000000000 ♠ 22 years, 273 days), Sikkim's Pawan Kumar Chamling has the longest incumbency . Virbhadra Singh (b . 1934) of Himachal Pradesh is the oldest chief minister, while Arunachal Pradesh's Pema Khandu (b . 1979) is the youngest . Thirteen incumbents belong to the Bharatiya Janata Party, six to the Indian National Congress and two to the Communist Party of India (Marxist); no other party has more than one chief minister in office . </P> <Table> <Tr> <Th> Colour key for parties </Th> </Tr> <Tr> <Td> Aam Aadmi Party All India Anna Dravida Munnetra Kazhagam All India Trinamool Congress Bharatiya Janata Party Biju Janata Dal Communist Party of India (Marxist) Indian National Congress Jammu and Kashmir Peoples Democratic Party Janata Dal (United) Naga People's Front Sikkim Democratic Front Telangana Rashtra Samithi Telugu Desam Party </Td> </Tr> </Table> <Tr> <Th> Colour key for parties </Th> </Tr> <Tr> <Td> Aam Aadmi Party All India Anna Dravida Munnetra Kazhagam All India Trinamool Congress Bharatiya Janata Party Biju Janata Dal Communist Party of India (Marxist) Indian National Congress Jammu and Kashmir Peoples Democratic Party Janata Dal (United) Naga People's Front Sikkim Democratic Front Telangana Rashtra Samithi Telugu Desam Party </Td> </Tr>

Chief minister and governors of all state in india