Haha - I agree about Turnbull, and that’s a pretty sharp insight. He really shouldn’t have cared - but he did.
I think you’re wrong about the Labor Party though. They changed their rules so to change a leader they need to have the whole of their grassroots membership vote, as well as the Parliamentary members. So it would be time consuming (months) and not worth the drama. For example, Bill Shorten is still leader after 5 years (and three Liberal PMs)
Interesting I didn't know they changed that.