The thing Abbott did when PM, was when he caught whiff that Rudd was positioning himself, he threw Australia's support behind Helen Clarke's official candidature. The effectively cut this very issue off at the knees. Turnbull undid this and now finds himself in the position, with a split cabinet. Good political move from Mal. I reckon it all part of the master plan, bit like the budget was! One day us mere mortals will see the results of his masterful cosmic plan.