<Tr> <Td> Manipur (list) </Td> <Td> N. Biren Singh </Td> <Td> </Td> <Td> 15 March 2017 (7002590000000000000 ♠ 1 year, 225 days) </Td> <Td> Bharatiya Janata Party </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Meghalaya (list) </Td> <Td> Conrad Sangma </Td> <Td> </Td> <Td> 6 March 2018 (7002234000000000000 ♠ 234 days) </Td> <Td> National People's Party </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Mizoram (list) </Td> <Td> Lal Thanhawla </Td> <Td> </Td> <Td> 7 December 2008 (7003361000000000000 ♠ 9 years, 323 days) </Td> <Td> Indian National Congress </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Nagaland (list) </Td> <Td> Neiphiu Rio </Td> <Td> </Td> <Td> 8 March 2018 (7002232000000000000 ♠ 232 days) </Td> <Td> Nationalist Democratic Progressive Party </Td> <Td> </Td> <Td> </Td> </Tr>

The current chief minister of which of these pairs of straight share the same surname