In the wake of James Purnell's resignation from the cabinet last night, the following worrying statement came from the higher reaches of the Labour Party:
"Deputy Labour leader Harriet Harman told GMTV: 'If James Purnell wants to make his decision to leave the government, then that's a matter for him, but he's not entitled to say that the prime minister has to go too'" (my emphases).
Er, why not?