A federal election to determine the members of the 44th Parliament of Australia took place on 7 September 2013. The centre-right Liberal/National Coalition opposition led by then-Opposition leader Tony Abbott of the Liberal Party of Australia and Coalition partner the National Party of Australia, led by Warren Truss, defeated the incumbent centre-left Labor Party government of Prime Minister Kevin Rudd by a 17-seat 3.6 percentage point two-party swing. Abbott was sworn in by the Governor-General, Quentin Bryce as Australia's 28th Prime Minister on 18 September 2013 along with the Abbott Ministry and the members of the House of Representatives. The 44th Parliament of Australia opened on 12 November 2013, which is taken to be the commencement of the term of members of the House of Representatives. The new senators were sworn in by the next Governor-General Peter Cosgrove on 7 July 2014, with their six-year terms commencing on 1 July.