<Tr> <Th> Political party </Th> <Td> Sikkim Democratic Front </Td> </Tr> <P> Pawan Chamling (born 22 September 1950) is the fifth and incumbent Indian chief minister of Sikkim . Chamling is the founder president of the Sikkim Democratic Front, which has governed the state for five successive terms since 1994 . </P> <P> He is also the longest standing Chief Minister in India, having won the legislative assembly elections for 5 terms in a row and will be completing 25 years of governance by the next legislative elections in 2019 creating a political history in India . </P> <P> On 28 April 2018 he is set to be India's longest serving Chief Minister ever . Right now the record is with Jyoti Basu who was Chief Minister of West Bengal from 21 June 1977 to 6 November 2000 (23 years 4 months and 16 days). </P>

Who has held office of chief minister for the longest period
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