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.
Richard Di Natale
Richard Luigi Di Natale (born 6 June 1970) is an Australian Senator and leader of the Australian Greens. Di Natale was elected to the Australian Senate in the 2010 federal election. A former general practitioner, he was the lead Greens Senate candidate in Victoria in the 2007 federal election but failed to win a seat. Di Natale became federal parliamentary leader of the Australian Greens on 6 May 2015 following the resignation of Christine Milne. Di Natale led the Greens at the 2 July 2016 federal election.