Expected to take strength mostly from Michele Bachmann, he seems instead to have taken most strength from Mitt Romney. Perry is eleven percentage points ahead of where he was in July, whereas Romney lost 6 points, Bachmann lost 3 points, Gingrich lost 2 points and Huntsman lost 1.
It begins to feel like the Republican field of candidates is sorting itself out. See the table on Gallup's webpage.
There is still talk of Pataki and Palin entering the race. My guess is that Perry's surge of strength will influence them to remain on the sidelines.