fill me up with.info reveals the political nature of Australian tweeters:
The research used two twitter profiles with embedded requests to complete the survey instrument.
One profile contacted active twitter users posting using relevant hashtags (#auspol, #qldpol, #nswpol, #actpol, #vicpol (excluding policing references), #taspol, #sapol (excluding Philippines references), #wapol, #ntpol), who used the words "Gillard" and "Abbott" in posts and users with "Australian politics" including in their bios (through the search engine tweepz.com). n=225
The second profile contacted a geographically disbursed group of Australians using the tweepz.com search tool to identify Australian Twitter users based on location. The survey research was undertaken between 14 December 2011 and 12 January 2012. n=110