I think it's more a case that you simply have to be squeaky clean to get on, risk takers or otherwise. Seriously, why should anyone give a monkeys about someone's private life if they are delivering good government? Yet people obviously do.
The only exception to that is if you are standing on a platform of family values whilst screwing members of your cabinet, such as those Tory hypocrites, Major and Currie.
Quite. But most people, in the end, are hypocrites. It's part of the human condition.