Susan McDonald considering putting hand up for National Party Deputy Leadership

David Littleproud's leadership of the National Party survived the Coalition's historic defeat at last year's election and an ill-fated party room spill last month. But yesterday, he walked away on his own terms, declaring he'd run out of puff. The party must now decide on a new leader - and there are several contenders. GUEST: Susan McDonald, Shadow Minister for Resources and Northern Australia PRODUCER: Jason Whittaker