You are referring to a "liberal democracy."I beg to differ that the solution is to vote for a third party. If people want a third party they would already be voting for a third party and in the US at least we have a two party system that discourages third parties.
Most people I know have some pretty weird ideas about what a democracy is. A lynch mob, for example, is not a democracy. Majority rule is not a democracy. The ancient Athenian motto they would shout before speaking to the voters was, "Strike if you must, but hear me first!" Lynch mobs don't bother to listen if they don't want to.
No, what makes a democracy are specific rights given people and minorities to ensure the peace. The right to vote is just one of those and the right to protest is another. When your vote becomes more or less meaningless for whatever reason its time to start protesting. When the majority or a minority starts dumping on you big time and you can't stop them, its time to start protesting. Otherwise they might actually start to think you like it.
Just a thought.