which chief minister has longest tenure?
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Chamling is the Founder and President of the Sikkim Democratic Front, which governed the state for five successive terms since 1994. Chamling's 25 year stint (1994-2019) as CM is the record longest ever by a chief minister of any Indian state.
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Under this system, Prime Minister Mackenzie King was Canada's longest-serving prime minister, holding office in three non-consecutive terms for a total of twenty-one years and one hundred fifty-four days.
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Incumbent. Shivraj Singh Chauhan The Chief Minister of Madhya Pradesh is the chief executive of the Indian state of Madhya Pradesh. In accordance with the Constitution of India, the governor is a state's de jure head, but de facto executive authority rests with the chief minister.
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Incumbent. Uddhav Thackeray The Chief Minister of Maharashtra is the head of the Government of the Indian state of Maharashtra.
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Incumbent. K. Chandrashekar Rao The Chief Minister of Telangana is the chief executive of the Indian state of Telangana.
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Ferdinand Marcos is the longest-serving President, having been in office for 20 years, 57 days (7,362 days).
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Incumbent. Uddhav Thackeray The Chief Minister of Maharashtra is the head of the Government of the Indian state of Maharashtra. Following elections to the Legislative Assembly, the Governor invites the party (or coalition) with a majority of seats to form the government and appoints the Chief Minister (CM).
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Arvind Kejriwal (born 16 August 1968) is an Indian politician and a former bureaucrat who is the current and 7th Chief Minister of Delhi since February 2015. ... Following the election, he took office as the Chief Minister of Delhi on 28 December 2013.
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Yogi Adityanath of the Bharatiya Janata Party has served as the incumbent chief minister since 19 March 2017.
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There have been six instances of president's rule in Karnataka, most recently in 2007–08. The incumbent chief minister is the Bharatiya Janata Party's B. S. Yediyurappa, who was sworn in on 26 July 2019.
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The youngest person to become Prime Minister was Rajiv Gandhi, who became Prime Minister at the age of 40 years, 72 days. The oldest living Prime Minister is Manmohan Singh, born 26 September 1932 (aged 87 years, 294 days).
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Incumbent. Captain Amarinder Singh The governor appoints the chief minister, whose council of ministers are collectively responsible to the assembly.
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The incumbent chief minister is the Bharatiya Janata Party's B. S. Yediyurappa, who was sworn in on 26 July 2019.
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In a nationwide survey concerning Indian Chief Ministers, Modi was named Best Chief Minister in 2007 by India Today. In March 2012 Modi appeared on the cover of the Asian edition of Time, one of the few Indian politicians to have done so, and made the 2014 Time 100 list of the world's most influential people.
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He was also the Chief Minister of Delhi from December 2013 to February 2014, stepping down after 49 days of assuming power. Currently, he is the national convener of the Aam Aadmi Party, which won the 2015 Delhi Assembly elections with a historic majority, obtaining 67 out of 70 assembly seats.
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Mamata Banerjee. Mamata Banerjee (Bengali: Bengali pronunciation: [mɔmota bɔndoˈpaddʱˈae̯] (Mamata Bandhopadhyaya) born 5 January 1955) is an Indian politician who is serving as the 8th and current Chief Minister of West Bengal since 2011 being the first woman to hold the office.
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Nitish Kumar (born 1 March 1951) is an Indian politician. He is the present and 22nd Chief Minister of Bihar, a state in India, since 2015 and has served in that role on five previous occasions.