John Hewson managed it back in 1993, and it proved a terminal blow to his authority, not to mention setting the "big target" political strategy back so far that it still hasn’t really recovered.

And, of course, Steven Marshall pulled it off four years ago, although he was largely absolved because by the end the 2014 state poll resembled less an election than some long-lost Franz Kafka novel, and because there was no one else who could credibly lead the party anyway.