law: 2. Definition.-
  In this Act, "Leader of the Opposition", in relation to either House of Parliament, means that member of the Council of States or the House of the People, as the case may be, who is, for the time being, the Leader in that House of the party in opposition to the Government having the greatest numerical strength and recognised as such by the Chairman of the Council of States or the Speaker of the House of the People, as the case may be.
  Explanation.-Where there are two or more parties in opposition to the Government, in the Council of States or in the House of the People having the same numerical strength, the Chairman of the Council of States or the Speaker of the House of the People, as the case may be, shall, having regard to the status of the parties, recognise any one of the Leaders of such parties as the Leader of the Opposition for the purposes of this section and such recognition shall be final and conclusive.