Critics of One Nation senator Malcolm Roberts like to tease him with the not-so-affectionate nickname "Mr 77": a reference to the number of first preference votes he attracted at last year's election.

"Mr 77" could soon be replaced by "Mr 19".

With Roberts tipped to be disqualified from Parliament next month for failing to renounce his British citizenship, his job looks likely to go to Queensland hotelier Fraser Anning - whose personal vote was even smaller than Roberts' modest number.

So who is Fraser Anning? And how likely is it that section 44 of the constitution will also claim him as a victim?