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.
Parliament of Australia
The upper house, the Senate, consists of 76 members: twelve for each state, and two each for the Northern Territory (including Christmas Island and the Cocos (Keeling) Islands) and the Australian Capital Territory (including Norfolk Island and the Jervis Bay Territory). Senators are elected using the single transferable vote proportional representation system and as a result, the chamber features a multitude of parties vying for power. The governing party or coalition has not held a majority in the Senate since 1981 (except between 2005–2008) and usually needs to negotiate with other parties and Independents to get legislation passed.