Delhi's Chief Ministers over the years

Since 1952, Delhi has had seven Chief Ministers. Chaudhary Brahm Prakash Yadav was the first CM of Delhi from in 1952 to 1955.
He was succeeded by Indian National Congress' Gurmukh Nihal Singh who assumed office in 1955 just for one year. The States Reorganisation Act, 1956 made Delhi a Union Territory under Central control. In 1993, Delhi became the National Capital Territory with its own Legislature and CM. 
Madan Lal Khurana from the BJP was the CM from 1993 until he resigned in 1996 after being embroiled in a corruption scandal. He served as the Union Minister of Parliamentary Affairs and Tourism in the Vajpayee government.
Sahib Singh Verma served as CM from 1996 to 1998. He began his socio-political journey as a volunteer in the Rashtriya Swayamsevak Sangh and later climbed the ranks in politics.
Sushma Swaraj served as the first female CM of Delhi for 52 days. She was also the first woman CM from the BJP.
Sheila Dikshit was longest-serving CM of Delhi, as well as the longest-serving female CM of any Indian state. She served for a period of 15 years.
Arvind Kejriwal has served as the CM of Delhi for two terms since 2014. AAP won the 2015 Assembly elections with a historic majority, obtaining 67 out of 70 assembly seats.