Our electoral system is broken in that it doesn't allow voters to reasonably express preferences which aren't one of the two mainstream options because of this

Our electoral system is broken in that it doesn't allow voters to reasonably express preferences which aren't one of the two mainstream options because of this spoiler effect. I'm not sure what the correct answer is, to complain about how "both parties are terrible" and vote for the mainstream party anyway and get more of the same and know that it will never change or to vote how you actually feel knowing that the system is rigged against allowing you to do that. I can't really fault someone for doing either.