Section 20. Districts

The  by-laws  may  provide  for  the division of the
  territory served or to be served by  a  cooperative  into  two  or  more
  districts for any purpose, including, without limitation, the nomination
  and  election  of directors and the election and functioning of district
  delegates.  In such case the by-laws shall prescribe the  boundaries  of
  the  districts,  or  the manner of establishing such boundaries, and the
  manner of changing  such  boundaries,  and  the  manner  in  which  such
  districts  shall  function.  No  member  at  any district meeting and no
  district delegate at any meeting shall vote by proxy or by mail.