The ALP "power brokers"? Many, many former politicians have spoken of this, including "respectables", like Button & Barry Jones. But Latham appears to have been particularly revolted & angry by his own experience.
Yes, along with the NSW Right, power-broking/manipulation is a huge issue in Victoria .. Branch stacking (for purposes of candidate reselection) is rife. It's a very hot potato for the Bracks government right now. Lots of internal strife. "Incidents" in local branches that have involved the police, people going public with the details in the media ..... There is even court action in the pipeline to sort out the problem. No wonder many folk feel there's no point in trying to participate in the ALP at the branch level!
Mind you, the Libs are very active on this front here, too. There are Costello endorsed candidates, Kruger endorsed candidates (at both state & federal levels) .... It gets very hot during preselections. And the fights often spill over into into the media.
Is it any wonder that ordinary voters become so cynical? Anyway, Latham will NOT be at all popular with those with the real power in the ALP for exposing the behind the scenes machinations in so much detail & with so much vitriol I mean, it just not cricket to talk about these things publicly! You might destroy voters' illusions!