law: Delimitation Act, 2002
  6. Casual vacancies.-
  If the office of the
  
  Chairperson or of a member or of an associate member falls vacant owing to his
  
  death or resignation, it shall be filled as soon as may be practicable by the
  
  Central Government or the Speaker concerned under and in accordance with the
  
  provisions of section 3 or, as the case may be, of section 5.