After predicting decades of presidential elections with near-perfect accuracy, historian Allan Lichtman revealed that Democrats have the edge using his time-tested formula. Lichtman told Fox News that he used 13 true-false questions — which he calls “keys” — to determine who will win the presidency. A candidate receives a “key” if a question is true. According to Fox News, Lichtman checks the following for each candidate: Want more breaking political news? Click for the latest headlines at Raw Story. – party mandate – contest – incumbency – third party – short-term economy – long-term economy …