Why is it critical to have rulers whose not just hands are clean but also their hearts are pure and vision is pure. The Barakah of a pious ruler flows down into the society as Noor. A cursed ruler brings fitnah into the society. The fitnah you see today because we have cursed rulers, Ulama e Soo are greater in numbers than Ulama e Haqq and jahil people pass as wise men in the society ! 

No matter what system you bring, the quality, piousness, vision, wisdom, purity of the leadership is the decisive factor ! This quality can NEVER come through elections, mocracy and multi-party systems. It never has anywhere !