A new poll reveals Former federal treasurer Peter Costello is by far the most popular choice to lead the Liberal Party.
Peter Costello has been given new incentive for a political coup with a poll showing overwhelming preference for him to become opposition leader.
A Fairfax/Nielsen poll of 1,400 hundred Australians has found 56 per cent support for Mr Costello as leader, compared with 27 per cent for Brendan Nelson.
Dr Nelson's disapproval rating has risen seven points to 53 per cent - the first time a majority of voters have disapproved of him as opposition leader.