Don’t you get tired of hearing about the “Liberal brand”? It comes up in editorials and TV commentaries all the time. We never hear about the “NDP brand” or the “Conservative brand” or the “Green brand” (unless you’re talking about a sticker you put on appliances.) Just the “Liberal brand”.
Somebody in the media started talking this way, and like good little lemmings so many of those who write about or comment on Canadian politics parrot the expression (nice mixed metaphor, eh?) Ironically, now that the status of the Liberal party has been diminished and their “brand” is just about all that’s left, parroting pundits will probably stop talking about it.