Abbott challenged to come clean in debate TRADE Minister Richard Marles has challenged Opposition Leader Tony Abbott to use the final leader's debate to reveal just what cuts he'll make if he becomes prime minister. But Mr Marles reckons that's unlikely because if Mr Abbott did come clean, people wouldn't vote for him. "The challenge tonight in the debate - and given this will be the last debate it's an important challenge for Tony Abbott - is to actually come clean and explain to the Australian people how he is going to fund a $70 billion black hole," he told Sky News. But I tell you what, he won't do it tonight because he knows that if he told you, people wouldn't vote for him. Mr Marles said the debate was an important opportunity to see the two leaders side by side. I don't think there's any doubt who would be the better person to lead this country. At a campaign event in Brisbane, Prime Minister Kevin Rudd said Mr Abbott owed the Australian people the "courtesy" of revealing his plans for cuts.