FYI, for those reading this, I re-edited my comment for clarity. I'm not trying to be biased towards Lichtman and his keys methodology.

However, Lichtman is one of the few professors and analysts out there who actually looks at multiple variables affecting the political environment as it relates to the presidential race and who could possibly win. If there are flaws, fine. As it relates to the presidential race the one thing Lichtman may not be the best at doing is predicting exact turnout.