The effect of corruption has many dimensions related to political, economic, social and environmental effects. In political sphere, corruption impedes democracy and the rule of law. In a democratic system, public institutions and offices may lose their legitimacy when they misuse their power for private interest. Corruption may also result in negative consequences such as encoring cynicism and reducing interest of political participation , political instability , reducing political competition, reducing the transparency of political decision making, distorting political development and sustaining political activity based on patronage, clientelism and money, etc.