Pew has the latest in the early round of September polling, and its results are somewhat ominous for the President.

The American public is highly critical of President Bush's handling of Hurricane Katrina relief efforts. Two-in-three Americans (67%) believe he could have done more to speed up relief efforts, while just 28% think he did all he could to get them going quickly. At the same time, Bush's overall job approval rating has slipped to 40% and his disapproval rating has climbed to 52%, among the highest for his presidency. Uncharacteristically, the president's ratings have slipped the most among his core constituents ­ Republicans and conservatives.

[...]

The deep and enduring differences over Bush's presidency are once again evident in attitudes toward government's response to the disaster. Fully 85% of Democrats and 71% of independents think the president could have done more to get aid to hurricane victims flowing more quickly. Republicans, on balance, feel the president did all he could to get relief efforts going, but even among his own partisans 40% say he could have done more.

Breaking down the data of the survey, President Bush's approval among Democrats and Independents stayed statistically the same as it was in July while his approval among Republicans fell a precipitous nine points to 79 percent. His disapproval rating among GOPers more than doubled from nine percent to 19%. However shocking as it comes to this blogger, it appears the President is actually beginning to lose some support from those who were once his most ardent supporters.