The Sydney Morning Herald has the report:
"The Liberal Party is in turmoil tonight following the resignation of six front benchers, including Tony Abbott and Senator Nick Minchin, after they refused to back Opposition Leader Malcolm Turnbull's position on the controversial emissions trading scheme. Liberal frontbenchers Sophie Mirabella, Senator Eric Abetz, Tony Smith and Stephen Parry have also quit their positions over the ETS, leaving Malcolm Turnbull's future as leader in doubt. In a press conference tonight Mr Turnbull said he respected his colleagues' decision but the issue was now one of integrity and it would be irresponsible for the party to not take action on climate change."
Yesterday Mr Turnbull survived a leadership challenge from Kevin Andrews MP but other Liberal MPs may yet challenge their leader if polls continue to point to a landslide defeat.