<Tr> <Th_colspan="2"> Member of West Bengal Legislative Assembly </Th> </Tr> <Tr> <Td_colspan="2"> In office 1977--2001 </Td> </Tr> <Tr> <Th> Preceded by </Th> <Td> New constituency </Td> </Tr> <Tr> <Th> Succeeded by </Th> <Td> Sonali Guha </Td> </Tr>

Who is the only chief minister of an indian state to have been elected for five consecutive terms