Ralph Nader is running for President because the two contenders for the nomination of the Democratic Party aren't far enough to the Left for his tastes. Here's a video announcing Nader's candidacy.In particular, Nader is afraid Obama won't be tough enough on Israel. Red State has a transcript of Nader's recent accusation that Obama has 'sold out' to the Israelis.
Cults are dangerous things, the more so because they are driven by real visions. But in time they become less about visions then obsessions. Ralph Nader isn't running for President. He's looking for his Sailor from Gibraltar.