O. Panneerselvam
10 events, 2001 to 2022; 4 marked as turning points.
2001
Supreme Court unseats Jayalalithaa, O. Panneerselvam becomes Chief Minister
After the Supreme Court held Jayalalithaa's appointment invalid, O. Panneerselvam served as Chief Minister until she returned in March 2002.

2002
Jayalalithaa returns as Chief Minister after Andipatti by-election
After her acquittal in the TANSI and Pleasant Stay cases, J. Jayalalithaa won the Andipatti by-election and was sworn in again as Chief Minister.

2014
Jayalalithaa convicted in disproportionate assets case
A Bengaluru special court convicted Jayalalithaa, forcing her to resign; the Karnataka High Court acquitted her in 2015 and she returned as Chief Minister.

2015
Jayalalithaa acquitted on appeal and returns as Chief Minister
Acquitted in the assets case by the Karnataka High Court, J. Jayalalithaa took the oath as Chief Minister for a fifth time.

2016
Chief Minister J. Jayalalithaa died at Apollo Hospital, Chennai, after a 75-day hospitalisation; O. Panneerselvam was sworn in the same night.

2017
Pro-jallikattu protests at Marina Beach
Mass protests led largely by students and youth at Marina Beach forced an ordinance and then a state law allowing jallikattu.

Sasikala convicted; Edappadi K. Palaniswami becomes Chief Minister
After the Supreme Court restored V. K. Sasikala's conviction, AIADMK legislators chose Edappadi K. Palaniswami as Chief Minister.

The Palaniswami and Panneerselvam factions of the AIADMK reunited, with Panneerselvam becoming Deputy Chief Minister.

2018
Amma Two-Wheeler scheme for working women
Prime Minister Modi launched a 50 percent subsidy, up to Rs. 25,000, for working women buying scooters, on Jayalalithaa's 70th birth anniversary.

2022
Edappadi K. Palaniswami takes control of the AIADMK
The AIADMK general council made Edappadi K. Palaniswami interim general secretary and expelled O. Panneerselvam.
