President of the Senate (Australia)
The position is provided for by Section 17 of the Constitution of Australia. The Senate elects one of its members as president at the start of each new term, or whenever the position is vacant. This is usually—though not necessarily—a member of the party or coalition that holds the most seats in the Senate. The largest party in the Senate is not always the governing party, as government is determined by the House of Representatives. The President of the Senate and the Speaker of the House of Representatives may consequently be from different parties.
Bob Day
On 1 November 2016, Day announced he had tendered his immediate resignation to the President of the Australian Senate. In a statement, Day said "while a number of offers for various parts of the Home Australia business have been received, the major investor who has been examining the group's portfolio of assets over the past fortnight, has decided not to proceed. Accordingly, I have today tendered my resignation to the president of the Senate effective immediately. It has been an honour and a privilege to serve as a senator for South Australia and I am sorry it has ended this way."