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.
List of Australian Senate appointments
Replacement senators for the Australian Capital Territory or the Northern Territory are chosen by the relevant territory legislature, under s.44 of the "Commonwealth Electoral Act 1918". Where the legislature is not in session, the choice is made by the Chief Minister of the ACT or the Administrator of the NT. Prior to the passage of this legislation, replacement territory senators were chosen by a joint sitting of both houses of the Federal Parliament, under s.9 of the "Senate (Representation of Territories) Act 1973".