How can a person's seat in Parliament become vacant if they are chosen as a member of both Parliament and a State Legislature?
A person's seat in Parliament can become vacant if they are chosen as a member of both Parliament and a State Legislature when the expiration period specified by rules made by the President has passed. They must either resign their seat in one House or the other to retain membership in both, otherwise their seat in Parliament will become vacant unless they have previously resigned their seat in the State Legislature.