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.
Greens South Australia
Penny Wright resigned from the Senate due to family reasons in September 2015. Later that month, Robert Simms was appointed to the casual vacancy by a joint sitting of the Parliament of South Australia.