(1)   In determining for the purposes of this Part whether a political party that is not a Parliamentary party has at least 1,500 members, the same member may not be relied on by more than one party.

  (2)   If an individual is a member of more than one political party that is not a Parliamentary party, then, for the purposes of subsection   (1):

  (a)   only the party nominated by the member may rely on the individual as a member; and

  (b)   no party may rely on the individual as a member if, after the Electoral Commission has given the individual at least 30 days to do so, the individual has not nominated a party.