Once we thought it was very rare. We now know that sociopaths probably constitute one to five percent of the population. To be acceptable today, a politician must be a sociopath. Every move, every smile, every emotion is used to get what he is after. By definition, the more conscience you have, the less perfect a modern politician you will be.
Democracy is a system of government where people get what they deserve.
We ASK for sociopaths to rule us. We want someone who will say the right thing. We label anyone who loses his temper or says anything that is purely an individual opinion, as over the edge. So we vote for people who say the right thing. All the time.