Actually, I think this might have an outside chance. I'm not sure what voting is like in Australia, but if turnout is as low as it tends to be in the states, particularly for elections where a candidate seems to be a shoe in, then there's not all that many votes they need to get. Big issue is that as long as they are tired entirely to Video Games, there chances drop greatly: Make it a party that focuses more on not treating all adults as immature man/children that need nannying, and I suspect it would be a real threat. Keep the pure video gamer association, and you have a novelty at best.
Also, I have a feeling that plenty of people who sent mail to Atkinson were likely not very...professional. To anyone who sent mail that was threatening, rude, or condescending, I would like to thank you for giving this idiot credibility, and a reason to take him seriously. You have done more to help his thought police-esque policies then any speech he could ever give. When someone is a bigot, the correct response is not to justify his beliefs.