2015–16 Arunachal Pradesh political crisis
Chief Ministers during the period

S No.
Name
Term
Term
Party
Party
Tenure (days)
6
Jarbom Gamlin
5 May 2011
1 November 2011
Indian National Congress
-
181
7
Nabam Tuki
1 November 2011
26 January 2016
Indian National Congress
-
1547
–
Vacant (President's rule)
26 January 2016
19 February 2016
N/A
-
24
8
Kalikho Pul
19 February 2016
13 July 2016
People's Party of Arunachal
-
145
(7)
Nabam Tuki
13 July 2016
17 July 2016
Indian National Congress
-
4
9
Pema Khandu
17 July 2016
16 September 2016
Indian National Congress
-
1 year, 354 days
9
Pema Khandu
16 September 2016
31 December 2016
People's Party of Arunachal
-
1 year, 354 days
9
Pema Khandu
31 December 2016
-
Bharatiya Janata Party
-
1 year, 354 days

Question: When Pema Khandu quit INC and joined the People's Party of Arunachal and later to Bharatiya Janata Party?
Answer: On 16 September 2016, Pema Khandu quit INC and joined the People's Party of Arunachal (PPA), and on 31 December 2016, he left PPA and joined Bharatiya Janata Party.