An ordinary, knockabout bloke, from an ordinary Sydney background, happens to stumble into politics and finds himself - who would have guessed? - suddenly installed in The Lodge. How good is that?

Then follows an unexpected election victory, and before too long he's suddenly confronted with the biggest threat facing the country since World War Two - an invisible virus.

I've always thought the inevitable biography - and Annika Smethurst has one coming out this week - would be guaranteed to sell well. Not enough to make its author rich, perhaps, but certainly worth a good advance.

And don't forget the drama.

All those obstacles Morrison overcame; all those people standing in his way. Political opponents, refugees, people who expected him to hold a hose, and now all those envious of him just because he flew back to Kirribilli House on Sydney Harbour to spend Father's Day with his family. Don't they understand the prosperity gospel?

Some were easier to dispatch than others, of course - but there's been no trace of blood, ever, on any of his many knives. From his abrupt departure from Tourism Australia to the removal of Michael Towke, who'd originally won preselection for the electorate he now holds. From his brilliant creation of "on-water matters" as a reason not to discuss people floundering in the water to his use of "envy" to dismiss criticism today. Dispatching everyone standing in his way, from Tony Abbott to Joe Hockey to Malcolm Turnbull. And finally thrusting himself forward, making his way to the promised land.

It's a good story: it's amazing it's taken so long for someone to write it. After all, every truly inspirational PM requires at least one significant tome to indicate his genius. Admittedly Kevin Rudd and Malcolm Turnbull did eventually have to write their own massive volumes: neither could find an author to do them justice. [I wrote a political biography of Rudd, one of two released before his election, but it was unauthorised. He may not have found it flattering enough.]

Any biographer needs to immerse themselves completely in their subject and find redeeming elements in their personality, otherwise all you end up with is a hatchet-job. The hope is to find something interesting, sympathetic or exciting about their character, a revealing clue to their actions or - best possible situation - a period of existential moral struggle, forcing them to choose between duty and personal desire. A moment when they've chosen to do the right thing rather than just what they can get away with.

Turning out political quickies has turned into quite an industry, almost managing to keep up with the speed with which we churn through political leaders. So why has there been no biography of Morrison up until now?

Any biographer has to find something interesting to say about their subject. A way of revealing their essential humanity. A method of illuminating their decisions and explaining their actions.

Perhaps the truth is simply that there hasn't been enough there to make such a narrative easy to weave.