Leader of the Government in the Senate (Australia)
The current Leader of the Government in the Senate is Mathias Cormann. The current Deputy Leader of the Government in the Senate is Simon Birmingham, who was appointed on the same date following the resignation of Mitch Fifield.
Australian Senate
In July 2017, a co-deputy leader of the Greens, Senator Scott Ludlam, resigned from the Senate on discovering that he was a dual citizen (born in New Zealand) and therefore, under Section 44 of the Constitution, had been ineligible to sit in the Parliament. The revelation prompted Ludlam's fellow co-deputy leader of the Greens, Senator Larissa Waters, to examine her citizenship status and, on discovering that she too was a dual citizen (born in Canada), she also resigned. Recounts of the 2016 election results respectively in Western Australia and Queensland saw Jordon Steele-John replace Ludlam and Andrew Bartlett replace Waters.