I've always sort of automatically assumed that all politicians are just the puppets of more powerful, but unseen, forces. The most obvious candidate is Big Business but perhaps it's the Mafia or the Illuminati - who knows?
I also imagine that soon after Blair was elected he was invited into some room somewhere and told, by persons unknown, just what was expected of him and what he could and couldn't do.

But then I'm just paranoid ... and they're coming to get me!!!!