If Fallon-style scandal drives our politics, Theresa May cannot survive | Martin Kettle

The former defence secretary’s exit sets a perilous benchmark for a shaky government that can’t afford to lose more ministersIn one of his many invaluable books on British politics, the great Sir David Butler – 93 last month and still following politics like a hawk – lists every significant ministerial resignation from British governments since the end of the Victorian era, along with a note of the reason for the minister’s departure. The roll call marks some o