"Amateur hour" is basically their theme. They were swept in on a wave of distrust for people who know what they're talking about. They were elected to tear down Chesterton's fence, even (and especially) the parts holding in the face-eating leopards.

To mix the metaphors further, they (the politicians and their supporters) fancy themselves the kind to dream of things that never were and ask why not. Why not have a war in Iran? You won't know until you give it a try.