First Past the Post, the world of the best of two evils

Is there any wonder that, as noted in Wikipedia, the "lesser of two evils" principle is closely associated to electoral politics? How could anyone consider this unrelated the first past the post system, in which one is only really allowed to make an affirmative statement about one candidate among the many? In a show of ideology (the ideology being that too many people are stupid), popular Austrianish economists did just that.