Three-quarters, 75% of Americans, think that corruption exists in America and that it is widespread. This is up from 67% in 2007. The country with the lowest perceived corruption is Sweden at 14%, so the perception of some corruption persists throughout human culture. For a representative democracy to have an increasing majority think corruption is widespread throughout their government is evidence that a perception of representation may be lessening. The good news, Americans feel free enough to speak out in a poll. Other countries may have lower percentages because citizens fear their government more.
(Click on the graph for the link.)