(i) Defection in politics means moving of a person from one party to another party for some personal benefit. It means changing party allegiance from the party on which a person got elected to a different party..
(ii) It happens when a legislature, after having been elected from a particular party leaves it and joins in other party.
(iii) The Constitution was amended to prevent elected MLA’s and MP’s from changing parties. Now the law says that if any MLA and MP changes parties, he or she will lose seat in the legislature.
(iv) The new law has brought defection down and has made dissent even more difficult.