Byelections for leaders are rather like steeplechases for horses: there is always the risk of serious injury.
Ahead of the 2018 super-Saturday contests, Bill Shorten had an impatient Anthony Albanese shaping up for a tilt in the event of a tumble. Shorten triumphed.
In 2020, Albanese’s position could have become shaky if he had lost the Eden-Monaro byelection. He retained the seat by a whisker, but that was enough.