I know what you mean but I think it's unhelpful to define it in terms of left/right. I'd describe them as having a bias towards the typical metropolitan liberal outlook.

The reason I'd describe it this way is that it's much more apparent on social issues and certain aspects of international relations, where they don't even seem to understand that other viewpoints might exist. On economics they seem to have at least some awareness that there are a spectrum of viewpoints and take a more consumerist view as often as they do a soft left view (although they still never really seem to consider libertarian or harder left viewpoints).