List of Chief Ministers of Delhi
List of Chief Ministers of Delhi

No
Name (constituency)
Portrait
Term (tenure length)
Party
Party
Tenure
Assembly (Election)
1
Chaudhary Brahm Prakash (Nangloi)
-
17 March 1952 – 12 February 1955 (2 years, 332 days)
Indian National Congress
-
1062 days
Interim Assembly (1952–56) (1952 election)
2
Gurmukh Nihal Singh (Darya Ganj)
–
12 February 1955 – 1 November 1956 (1 year, 263 days)
Indian National Congress
-
628 days
Interim Assembly (1952–56) (1952 election)
Office abolished, 1956–93
Office abolished, 1956–93
Office abolished, 1956–93
Office abolished, 1956–93
Office abolished, 1956–93
Office abolished, 1956–93
Office abolished, 1956–93
Office abolished, 1956–93
3
Madan Lal Khurana (Moti Nagar)
-
2 December 1993 – 26 February 1996 (2 years, 86 days)
Bharatiya Janata Party
-
816 days
First Assembly (1993–98) (1993 election)
4
Sahib Singh Verma (Shalimar Bagh)
-
26 February 1996 – 12 October 1998 (2 years, 228 days)
Bharatiya Janata Party
-
959 days
First Assembly (1993–98) (1993 election)
5
Sushma Swaraj
-
12 October 1998 – 3 December 1998 (52 days)
Bharatiya Janata Party
-
52 days
First Assembly (1993–98) (1993 election)
6
Sheila Dikshit (New Delhi)
-
3 December 1998 – 1 December 2003 (4 years, 363 days)
Indian National Congress
-
5504 days
Second Assembly (1998–2003) (1998 election)
6
Sheila Dikshit (New Delhi)
-
1 December 2003 – 29 October 2008 (4 years, 333 days)
Indian National Congress
-
5504 days
Third Assembly (2003-08) (2003 election)
6
Sheila Dikshit (New Delhi)
-
29 October 2008 – 28 December 2013 (5 years, 60 days)
Indian National Congress
-
5504 days
Fourth Assembly (2008–13) (2008 election)
7
Arvind Kejriwal (New Delhi)
-
28 December 2013 – 14 February 2014 (48 days)
Aam Aadmi Party
-
48 days
Fifth Assembly (2013-15) (2013 election)
–
President's rule
-
14 February 2014 – 14 February 2015 (1 year, 0 days)
N/A
-
365 days
Fifth Assembly (2013-15) (2013 election)
(7)
Arvind Kejriwal (New Delhi)
-
14 February 2015 – present (4 years, 75 days)
Aam Aadmi Party
-
1536 days (1584 days)
Sixth Assembly (2015–20) (2015 election)

Question: Who was the longest serving Chief Minister of Delhi, and what years did he serve?
Answer: Sheila Dikshit was the longest serving Chief Minister of Delhi from 1998 to 2013.