RPT-UPDATE 2-Australia's carbon laws face delay, poll possible

(Repeats to additional subscribers)

* Australia's carbon trade policy in peril

* Polls show support for carbon trading, climate action

* Opposition divided, Turnbull faces leadership vote

(Adds opposition leader comments)

By James Grubel

CANBERRA, Nov 30 (Reuters) - Australia's key policy to fight global warming limped closer to defeat on Monday with parliament set to delay or reject the government's carbon emissions trade scheme, raising the chances of an early election.

Defeat or further delays to the carbon-trade laws will be a major embarrassment to Prime Minister Kevin Rudd, who is in the United States to discuss climate policy with President Barack Obama ahead of December 7-18 U.N. climate summit in Copenhagen.

Australia is the developed world's biggest per capita emitter of greenhouse gases, blamed for global warming. The government aims to cut emissions by 5-25 percent by 2020 from 2000 levels, with the size of the cut depending on the global position agreed at Copenhagen.