As I see it the thing is, the founding arguments of representative democracy are that:
A) the representatives elected for the people by the people are esentially statesmen that put the country, its people and its constitution above everything, especially above themselves, and wouldn't go against any of them neither against the rule of law;
B) If A fails, a group of peer statesmen representatives elected for the people by the people will correct course via legislative power, taking measures that could go even to impeachment and removal from office;
C) If A and B fail, the people will punish these statesmen in periodical elections, removing from power those who have betrayed their trust;
D) If everything else fails, there's a separate group of non partisan statesmen fully devoted to the rule of law that have the legal resources to punish those in power who abuse their power, the people, the constitution and the laws.
So when all of the above fails, then what's left of representative democracy?