The Court of Public Opinion will ride against him sooner or later.
When a politician does such a bad job in a press conference in Au, some parts of the media do their best to make him look like an idiot. We don't usually hear from said politician for a while; either he smarts under the criticism or his superiors give him a lecture about it. Even if he doesn't care, he quickly gets taught that he has to care.
Mind you, we seem much more ready to pillory our politicians than you 'mericans are...