My prediction is that his loyal female deputy will catch him unawares and disLodge him (geddit? geddit?) from the PMship, he will go to the backbench and immediately begin white-acting her leadership, the Coalition won't return with an absolute majority at the next election and she will have to form a minority government with Clive "Titanosaurus" Palmer and Jacqui "Size Queen" Lambie (both of whom get re-elected by their wacky electorates because there's nothing better on telly), the country will go downhill even further while they leak confidential discussions and brief journos against each other, she'll finally bring things to a head by calling a spill, he'll win it (coz nobody else wants to lead a mortally wounded government), but lose the 2019 election.
And the cycle will repeat. Deja vu anyone?