Newspaper “backing” party

BBC: Murdoch paper ‘may back Tories’.

Now I know that media in the UK is openly partisan, but I wonder if the people reading the papers in question know which party the paper is backing. I suppose at least they are honest about their partisanship. But I am dumbfounded still. I wonder which party Murdoch’s papers are going to back in the Australian election, or the US election for that matter.