One of my Facebook friends -- and yes, I do have some who are not libertarians -- shared this blog link showing a series of short PSA comics on the subject of voting that were published in 1960s under the overall title of the "Good Government Comic Book" series. The comics are a bit dated, to be sure, but they have some good stuff in them; the kind of things they used to teach in Civics classes. Do they teach this stuff any more?
Comics With Problems #53 : "The Man Who Stole Your Vote", "The Next Four Years" and "If Your Kids Could Vote"