[MargaretR]

There have been so many seedy revelations lately that nothing surprises me any more.

Sexual deviance from the norm is more common amongst politicians than in the general population.

Often political career advancement depends on 'who you know', and those who are blackmailable more likely to be controllable by their mentor, which is useful when you need an MP to 'toe the party line.'

Many are closet gays. Nigel Evans 'came out'. Many don't. It could be that by doing so he poses a risk to those he knows haven't come out. Perhaps they now regard him as a potential threat rather than a controllable asset.