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.
List of Australian Leaders of the Opposition
To date there have been 33 Opposition Leaders, 18 of whom have served terms as Prime Minister. The current Leader of the Opposition is Bill Shorten of the Australian Labor Party, following an election of the new Parliamentary Labor Leader by caucus and ALP members on 13 October 2013. The current Deputy Leader of the Opposition is Tanya Plibersek of the Australian Labor Party, following her election on 14 October 2013 by the Labor Caucus. Tanya Plibersek is the fourth woman to hold the position of Deputy Opposition Leader.