Psychopaths are drawn to and uniquely capable within politics. They are charismatic, show no remorse, crave power and rise to the top. Leading psychologists have built the literature on the corporate form, but statist psychopathy bears investigation.
It requires a certain mindset to want to rule others. This person believes they are qualified to and morally justified in making life-changing decisions for millions at the point of a gun (state law).
Desire to rule is one thing, but the qualities that enable one to rise in the political hierarchy are perhaps rarer and more pernicious. Psychopaths are manipulative, charming, narcissistic and excellent liars. Most importantly, they score low on the empathy scale — showing little or no remorse for inflicting suffering (and readily violate the non-aggression principle). As children, many psychopaths torture animals and bully peers. They learn to mimic the normal outward display of emotionality, but it is purely an act.
It is easy to compromise your morals if you don’t have any. Being a politician means lying. The job description includes making back room deals and compromising on campaign promises. People often joke about politicians being heartless, deceitful, untrustworthy, self-aggrandizing and vindictive. But perhaps they must be to become politicians.