Sussan Ley in the context of Division of Farrer

The Liberal Party of Australia (LP) is the prominent centre-right to right-wing political party in Australia. It is considered one of the two major parties in Australian politics, the other being the Australian Labor Party (ALP). The Liberal Party was founded in 1944 as the successor to the United Australia Party. Historically the most electorally successful party in Australia, the Liberal Party is now in opposition at a federal level, although it presently holds government in the Northern Territory, Queensland and Tasmania at a state (sub-national) level.

The Liberal Party is the largest partner in a centre-right grouping known in Australian politics as the Coalition, accompanied by the regional-based National Party, which is typically focussed on issues pertinent to regional Australia. The Liberal Party last governed Australia, in coalition with the Nationals, between 2013 and 2022, forming the Abbott (2013–2015), Turnbull (2015–2018) and Morrison (2018–2022) governments. The Coalition has been suspended on occasion throughout the 20th and 21st centuries, though as of 2025 the two parties form a shadow ministry under the leadership of Sussan Ley.

In Australian parliamentary practice, the Opposition or the Official Opposition consists of the second largest party or coalition of parties in the Australian House of Representatives, with its leader being given the title Leader of the Opposition. The Opposition serves the same function as the official opposition in other Commonwealth of Nations monarchies that follow the Westminster conventions and practices. It is seen as the alternative government and the existing administration's main opponent in the Australian Parliament and at a general election. By convention, the Opposition Leader in the federal Parliament comes from the House of Representatives, as does the deputy, although the Government and Opposition may also both have leaders in the Senate. The Opposition is sometimes styled as His Majesty's Loyal Opposition to show that, although the group may be against the sitting government, it remains loyal to the Crown (the embodiment of the Australian state), and thus to Australia.

The current Opposition at a federal level is the centre-right Liberal Party/National Party Coalition, led by Sussan Ley.

The shadow ministry of Sussan Ley is the shadow cabinet of Australia since May 2025, serving in opposition to the Albanese government. The shadow ministry is the Opposition's alternative to the Albanese ministry, which was sworn in on 13 May 2025. The shadow ministry was first appointed by Sussan Ley following her election as Leader of the Liberal Party and Leader of the Opposition also on 13 May 2025.

The National Party was the Liberal Party's coalition partner until the 2025 federal election, and re-elected its party leader David Littleproud on 12 May 2025 after the election. Littleproud and senior Nationals members announced on 20 May 2025 that their party would break away from the Coalition and would not be part of the shadow ministry. A Liberal Party-only shadow ministry was to be announced a few days later. However, the Liberal-only shadow ministry did not eventuate, as the parties instead announced they were looking to negotiate a new Coalition deal. On 28 May, a new Coalition agreement was reached, and both parties would be in a Coalition opposition again. As a result, the shadow ministry would once more consist of both parties.

A federal election was held in Australia on 10 November 2001. All 150 seats in the House of Representatives and 40 seats in the 76-member Senate were up for election. The incumbent Liberal Party of Australia led by Prime Minister of Australia John Howard and coalition partner the National Party of Australia led by John Anderson defeated the opposition Australian Labor Party led by Kim Beazley. As of 2024, this was the most recent election to feature a rematch of both major party leaders.

Future Opposition Leaders Peter Dutton and Sussan Ley entered parliament at this election.