Constitutional definition of floor crossing National February 18, 2021 ISLAMABAD: A federal or provincial legislator becomes guilty of defection if he or she commits any one of five acts enumerated in the Constitution. These five acts, however, do not include voting against party directives in the Senate elections. Being guilty of floor crossing entails the disqualification of the deserter as a member of the legislature. A precise procedure has been delineated in the Constitution that must be followed after the concerned party chief finds that a lawmaker has defected. It is a long-drawn-out process in which the Speaker initially plays a key role.