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.
Penny Wright
On 17 July 2015, Wright announced that she would be resigning from the Senate due to illness in her family. She gave her final speech on 19 August, and resigned on 9 September. Robert Simms was appointed to the casual vacancy by a joint sitting of the Parliament of South Australia on 22 September 2015.