This paper explores the relationship between the audience of commercial talkback radio and the actual existing democratic public sphere in Australia. Drawing upon Anderson’s (1987) notion of an imagined community and Warner’s (2002) discussion of publics, the paper suggests that two different but entwined modes of address operate around the talkback audience. The first centres on the active creation of an imagined community brought into being and maintained through host and caller interaction, whilst the second, which is dependent on this prior formation, involves the audience being treated as a political public within the public sphere.