Pepe the Frog is now a character in the presidential campaign. So is Alicia Machado, the former Miss Universe brought up by Hillary Clinton during the debate. Friday morning, she became the subject of a Twitter rant by Donald Trump. Every four years, the presidential election seems to give at least one obscure citizen his or her 15 minutes of fame. Remember Joe the Plumber? Who are some of the other people who’ve been used by campaigns and what happened to them after?