I don't know how laws and culture are in the USA, but in my country (Italy) vote is not an obligation. Vote is a right, and a hard earned one. It is also considered a civil duty. But never an obligation. The choice not to vote is also an expression of one's idea: that he does not believe in any of the politicians, or in the system as a whole. Lack of votes is also a measure on how much people believe in politicians.…
Are you sure? Did you forget the fall of all the "traditional" political parties 15 years ago or so, and the first rise of Berlusconi?