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.
Father of the Australian Senate
The only Father of the Senate with broken service but whose latter period of continuous service was sufficiently long to qualify was Sir Walter Cooper. Annabelle Rankin was a joint Father of the Senate, from 1 July 1968 to 24 May 1971, the only female to achieve that status. The possibility of a woman becoming a longest-serving senator was not provided for in "Australian Senate Practice", and there has still been no move to amend the text or title to this day.