On 14 July 2017, Ludlam resigned from the Senate after he found that he had dual Australian-New Zealand citizenship. The next week on 18 July 2017, his former co-deputy, and Queensland Senator, Larissa Waters resigned, after discovering that she held dual citizenship with Canada, and that had she been born a week later that would not have been the case. Both were ineligible to be elected to Parliament under section 44 of the Australian Constitution. Subsequently, Adam Bandt and Rachel Siewert were named as temporary co-deputy leaders until the arrival of Ludlam and Waters' replacements in Canberra.