The Opposition aren't really the Opposition. They're just called the Opposition. But in fact they are the Opposition in exile. The Civil Service are the Opposition in residence.
Acting is half shame, half glory. Shame at exhibiting yourself, glory when you can forget yourself.
It would be easy to say that I want to play a role that was very much like myself, but more or less with acting, you get to be all these different things, and you aren't trying to be yourself, so it's escapism in a way.