Turnbull was regarded as a "believer" in
global warming. As Environment Minister, he had overseen the introduction of an
emissions trading scheme (ETS) as a policy of the Liberal Party shortly before the Howard government's defeat. However, many of Turnbull's fellow MPs in the Coalition were
climate change deniers. Tensions within the Coalition on climate change policy had contributed to the downfall of Nelson's leadership. As leader of the Liberal Party, Turnbull supported the introduction of an ETS. In June 2009, he indicated in principle support for an ETS proposed by the
Rudd government despite the opposition of his Coalition partner, the
National Party. Turnbull subsequently outlined the Coalition's position that it would oppose the ETS introduced to Parliament by the government, but would be open to negotiating an amended version. Turnbull's willingness to negotiate with the government was met with opposition from some Coalition MPs. By September 2009,
The Australian was reporting that only 12 of the 59 Liberal
backbenchers supported negotiations. On 18 October 2009, Turnbull fronted a meeting of Coalition MPs with a proposal to negotiate amendments to the government's ETS. This meeting supported his proposal, in what was seen as a test of Turnbull's leadership. However, there was speculation that a number of Coalition Senators would defy Turnbull and
cross the floor of the
Senate to vote against any ETS legislation. The ETS opponents argued that it would be premature for Parliament to pass ETS legislation before the
Copenhagen Summit on climate change. The divisions within the Coalition were laid bare in an episode of
Four Corners, aired by the
Australian Broadcasting Corporation on 9 November 2009. The program featured the Coalition's leader in the Senate,
Nick Minchin, suggesting that man-made climate change was a conspiracy of the
political left and disputing Turnbull's authority to strike a deal with the government on the ETS. Later in the month, Minchin spoke against the ETS in the Senate. Abbott—who had publicly supported the ETS—was now arguing that the Coalition should abandon the policy. Turnbull attacked Abbott's change of mind, stating: "Tony has expressed a number of views, each of which is at odds with the view he expressed before". On 23 November 2009, the Coalition's climate change spokesman
Ian Macfarlane agreed to a deal with the government to amend the ETS legislation. The amendments provided industry with substantial compensation and exemptions from the ETS. Turnbull took the deal to Liberal MPs for formal approval, but a majority of backbenchers opposed it. Turnbull nonetheless claimed he had the Coalition's support, by counting as supporters the 20 members of the Coalition
Shadow Cabinet who he argued should be presumed to support the deal. This claim was met with rancour by his opponents in the Coalition. Anger at Turnbull's response to the 23 November 2009 meeting triggered a spill motion against his leadership three days later. The motion was moved by
Kevin Andrews, a former Minister in the Howard government, but was defeated by a vote of 48 to 35. Andrews was not seen as a genuine prospect for the leadership, so the close vote on the spill motion was considered a blow to Turnbull. While Abbott supported Turnbull at the time of Andrews' spill, he subsequently resigned from the frontbench. Several others joined Abbott in resigning, including
Nick Minchin,
Eric Abetz,
Sophie Mirabella and
Tony Smith. ==Abbott and Hockey challenges==