That is also when Bush's numbers started to tank and never went back up. That was when his conservative base stopped supporting him. I guess even ole humble and lovable GW can hold a grudge.
It could be as simple as that.
After the 2006 election, GWB gave off vibes of total defeat and capitualation to the Leftist horde.
For me, there were 3 telling moments in 2005 which proved to me that "W's compassionate conservatism" would never evolve into something the conservative GOP base would ever embrace.
1. JAN 2005 - He said in effect that he had earned points and was ready to cash them in. He really cursed himself with that statement.
2. 5/01/2005 - The illegal alien Hispanics out west really started protesting for amnesty on May Day.
3. AUG 2005 - Hurricane Katrina was an absolute public relations disaster for "W" from which he never recovered.
Remember that nice turn of phrase he used during the 2000 campaign, about the manner in which minorities are treated in the public education system? "The Soft Bigotry of Low Expectations", W said. We'd treat people equally, as we honestly believe that all men are created equal.
And I bought that, hook, line and sinker.
Then what did W do as soon as he got into office? He turned over his Education plan to Teddy, the Women, Children, and Oldsmobile killing Senator now representing Hell. He didn't stick up one second for his original plan.
That told me volumes about W. He had moments right after 9/11, but overall? Overwhelmingly a putz.