The High Court has ordered recounts to replace former senate president Stephen Parry and former senator Jacqui Lambie, who both resigned when they found they were British citizens.
The case of South Australian Nick Xenophon candidate Skye Kakoschke-Moore who also resigned over citizenship issues will be back before the court in January for directions.
Her lawyer told the High Court today she has now renounced her British citizenship and should be included in the recount.
The court will resume on Wednesday to consider the result of the recounts.
Justice Geoffrey Nettle flagged a full-bench hearing in late January, after hearing there may be a challenge to whether Jacqui Lambie's replacement is qualified to sit in the Senate.
Mr Parry's most likely replacement is former senator Richard Colbeck, however below-the-line voting could complicate matters, as a quarter of all Tasmanian Senate votes were below the line.
Mayor of Devonport Steve Martin is next in line behind Ms Lambie, and has indicated his intention to take her seat, however he may face eligibility questions of his own.
Ms Kakoschke-Moore was born in Singapore to British parents, and received confirmation of her UK citizenship late last month.
Her case will return to the court in January.