Idiocracy is democracy gone wrong through idiocy. It is the unfortunate situation where the vote of a person ignorant of even the most basic of facts surrounding an issue or candidate counts exactly as much as the vote of someone who is well-informed about the specific issue or candidate.
In an idiocracy the vote of someone who says for example, "I won't vote for Obama because I heard he is a known terrorist and doesn't like Italian food" counts as much as the vote of someone who makes an effort to find out exactly where the presidential candidates stand on various issues. It's democracy gone wrong through idiocy. Another example is "I won't vote for McCain because I heard he has Alzheimers and has already spent time in a nursing home."