Section 3-218. Subpoenas; power to issue by boards of elections

1.  The
  board of elections and any of the commissioners thereof may require  any
  person  to  appear  and  attend before the board or a commissioner at an
  office of the board and be examined by the board or a commissioner as to
  any matter in relation to which the board is charged with a  duty  under
  this  chapter,  or  in relation to violations of the elective franchise,
  and subpoenas may issue therefor.
    2. When an  oath  is  required  or  permitted  by  this  chapter,  any
  commissioner,  or  an employee of the board designated in writing by it,
  may administer such oath.