Based on this show I would seriously suggest Evan Harris for Prime Minister. Even Michael Portillo sounded extremely sensible and there was clearly a highly supportive audience as well.
Alistair McGrath who wrote the anti Dawkins book sounded like a complete idiot and did nothing for his case.
Accepting I am biased the God side does seem to be struggling to come up with even interesting people lately let alone intelligent ones. The only card they seem to have left to play and they play it strongly is authority. Hopefully that will be undermined if we can have some people in positions of power who are willing to stand and state their atheism.