On thinking about it, if I was going for a job and one of the other candidates was a personal friend of one of the interviewers I would feel at a disadvantage. This is because in a normal situation a candidate would have a limited time to make a good impression with the interviewers in a situation where they might be nervous.
Someone well known and already liked by one of the interviewers would not have this problem and hence they would have an unfair advantage.
A loveliness of ladybirds. So what are politicians?

