"On our national survey in June Obama had an 82% approval rating with Democrats. Now it's 83%. He had a 46% approval rating with independents. Now it's 47%. No real change on either of those fronts. But with Republicans he's dropped from an 18% mark to just 10%. That shift is what put his approval rating below 50% -- he's gone from a small amount of crossover support to a very small amount of crossover supports."