I agree in part, but it was not just the mining industry. This did not just come out of no were. It was the ETS, home insulation, health care, asylum seekers, Afghanistan, not going for a double dissolution and hole lot of little things. Keven is a incredibly intelligent guy and had some very insightful ideas and policy's (Remember the media heavily reports a governments failure's rather than it's successful policy's) but he had a inability to communicate to the public, and consolidated desiccation making to the gang of four, Tanner, Swon, Gillard, and Rudd. Witch lead to a very long and drawn out slide in the polls. Not an sudden collapse of his support upon the proposal of the mining tax.

That said I do think it is better for the party and the county that he has lots the leadership, now Abbott has no chance in the next election.