Political Culture of the Municipality
Many local governments have an established political culture with certain expectations and practices that often determine what is seen as acceptable in local politics. In municipalities with an undeveloped or underdeveloped political culture, accountability and legitimacy is usually low and principles of ethics in government are not established. This can encourage corruption to take hold in the local government because citizens do not know what is considered corrupt, and local officials are not afraid to be corrupt because of the low accountability. In some places the local governments have been corrupt for so long that the citizens think that is how it is supposed to work because that is all they have been exposed to. Long periods of political instability will also lead to corruption in the government because people are unsure of how the government should operate, and thus do not know what practices are corrupt or how to stop them if they are corrupt.
taken from the wikipedia