Bhutto gifts party to husband in will

Benazir Bhutto has gifted her political party to her husband, in her will – saying she wants him to replace him.

I wonder if this idea could catch on.  Does Winston for example have a will in which he nominates his successor?  Jim Anderton probably doesn’t as Jim probably doesn’t accept he is mortal. And who would Peter Dunne leave his party to in his will?  It probably says “Anyone but Gordon”.