ANSWER: Political Defection

The 52nd amendment to the Constitution of India is most closely related to Political Defections. Anti- Defection Law is mentioned in the Tenth Schedule of the Constitution, which was presented by the 52nd Amendment in 1985 during the regime of the Rajiv Gandhi government.

Defection is characterized as "to forsake a position or affiliation, regularly to join an opposition party" which basically depicts a circumstance when an individual from an ideological group relinquishes their faithfulness towards the gathering and gives his help as a vote or in another manner towards the other party.  

Under Anti- Defection Law -Amended articles were 101, 102, 190 and 191. The insertion of schedule 10 also took place along with the amendments.

Be that as it may, portions of the Tenth Schedule to the Constitution of India was struck somewhere by  the Supreme Court in case of Kihoto Hollohan v. Zachillhu 1992 SCR (1) 686, for being in contrast with Article 368 of the Constitution.