Malcolm Turnbull mate Bruce McWilliam says PM's demise a sad day

One of Malcolm Turnbull's closest friends and confidantes says the Prime Minister's demise is a sad day. 

But Bruce McWilliam, Seven Network commercial director, says Mr Turnbull knew politics was not a bad of roses and is philosophical about being rejected by the Liberal Party. 

Bruce McWilliam speaks with the ABC's Peter Ryan.