Media intrusion theory holds that the advent of electronic media, especially television, has accelerated or even precipitated party decline. This is evidently borne out by the declining membership of, and weakening support for, the two major Australian parties which each enthusiastically embraced new forms of political communication. However, “media intrusion” has arguably strengthened rather than weakened Canada's already frail brokerage parties. This different experience may be explained by the dissimilar legislative, federal and media environments in which Canadian and Australian political parties operate. Curiously, although the new forms of political communication have had different impacts, these have triggered changes in Australian political parties which have increased their resemblance to their Canadian counterparts.