Since 1952, India's National Capital Territory Delhi has seen 7 chief ministers, starting from Chaudhary Brahm Prakash of INC Party who took aoth in 1952 to currently serving CM Arvind Kejriwal who took oath in 2015.The longest-serving chief minister, Sheila Dikshit from the INC Party served for 15years from 1998-2013. Delhi has been under Presidents rule for 1 year. The major ruling party has been INC, BJP and Aam Aadami Party.