The Rudd government published a final White Paper on 15 December 2008, and announced that legislation was intended to take effect in July 2010; but the legislation for the CPRS (aka ETS) failed to gain the numbers in the Senate and was twice rejected creating a double dissolution election trigger. A bitter political debate within the Coalition Opposition saw Opposition leader Malcolm Turnbull lose the leadership to the anti-CPRS Tony Abbott. The Rudd government did not call an election and in April 2010, Rudd deferred plans for the CPRS.