Pawan Chamling: Sikkim’s Pawan Chamling (68) created history by becoming longest-serving Chief Minister in India. He has completed 23 years, four months and 17 days of uninterrupted service in office. He surpassed earlier record held by Jyoti Basu, 5-term West Bengal CM who held office for 23 years. Basu was in office from June 21, 1977 to November 6, 2000.