Man does not seem to be able to govern himself in large numbers for any appreciable length of time. A seat of government is always a repository for wealth and power, and has to be to function.
Eventually, attracted by these two corrosive elements to the human soul, less than honest people will perculate to the top. Following will be lesser and greater sociopaths, who will be more successful because they will be willing to do things even a dishonest man will not do to achieve his goal.
Thus proceeds the rot. No, I don't have a solution. Each individual must govern himself for a human government to work, and then, any system will work, or none at all. Perhaps in some future level spiritual evolution.
Sorry to be negative, but history compels me so.
And so it goes. But then, as the words of our Declaration of Independence admonish us, it is our duty to "throw the bums out," one way or another....
This is exactly why "character matters" and why scum like Clinton's so-called personal life was an extension of his public life. If someone is inclined to use and abuse and exploit the people around him for personal gratification, he (or she) will have the same exploitive and abusive mentality in the public sphere. The only reason someone wouldn't understand this is because of their own desires to do the same thing - at least in theory.