Abbott is a dead man walking.
Unfortunately, the best candidate that the coalition have, Malcolm Turnbull, probably won't get the job because even though he is a highly successful businessman, he is perceived as a leftist by News Corp and the mining companies because he believes in the science of global warming.
On the other hand it will be very difficult for the conservatives to elect a female leader. They are barely able to offer women a minister portfolio so the party looks years away from doing something like this.
There might be a chance for a backmarker to sneak over the line here. If 3 or more stood for the role anything could happen.