According to Wikipedia.org the term Political Corruption is defined as “the misuse by government officials of their governmental powers for illegitimate, usually secret, private gain. Misuse of government power for other purposes, like repression of political opponents and general police brutality, is not considered political corruption. Illegal acts by private persons or corporations not directly involved with the government is not considered political corruption either.” They go on to explain that every form of government is susceptible to political corruption, even defining the many different forms, bribery, extortion, cronyism, nepotism, patronage, graft, embezzlement as well as drug trafficking, money laundering and even organized crime.
http://en.wikipedia.org/wiki/Political_corruption