Successful parties with no membership to speak of.
Many of today's most successful parties - like the Australian Labour Party - are a mile wide and an inch deep.
This party is but a house of cards - many of its branches have almost no members but still collectively elect a Labour member, as they have unbrokenly for over a hundred years.
Read Rodney Cavalier's POWER CRISIS read it , and if you are still part of the same-old-same-old left wing (why?) ---- weep.