With it looking increasingly likely that One Nations Malcolm Roberts could have his qualifications to sit in the Senate referred to the High Court, the question of who would replace him if disqualified has attracted attention.

Senator Roberts problem is that he overlooked the fact he had British citizenship. Shortly before the election he tried to renounce that citizenship. The British government did not formally act on that request until December 2016, after he was elected to the Senate.

In British law Senator Roberts was still a British citizen when he stood for the Senate, which would disqualify him from being a candidate at the 2016 electio…

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