Did Bush lose support of (mainstream) economists?

There was a commentary in Washington Times about the upcoming book by Ryan Sager: "The Elephant in the Room: Evangelicals, Libertarians, and the Battle to Control the Republican Party." :

The gist of the book is that the coalition of religious conservatives and libertarian free-marketeers is breaking apart. ... The traditionalists, infused by evangelical religious fervor, have taken that wing of the party far beyond its historical roots. In the past, traditionalists were ... highly tolerant of those nonreligious conservatives who derived their ideology from natural law or free-market economic principles.

The traditionalist-libertarian coalition was also a political marriage of convenience. Neither group commanded sufficient votes to defeat the liberals, who were dominant from the 1930s to the 1970s. Since liberalism was abhorrent to both groups, they were able to make common cause.

[T]he libertarians were empowered by the collapse of Keynesian economics in the 1970s. ..[W]hen inflation became a serious problem in the 1970s, the Keynesians really had no good explanation for it or a cure. In this intellectual vacuum, libertarian economists like Milton Friedman gained credibility and influence by arguing tight money was needed to stop inflation.

The Keynesians also had little to offer when economic growth slowed... This opened the door for the supply-siders, who advocated tax rate reductions to stimulate growth. ...By 1980, these different strands of the conservative coalition united behind Ronald Reagan, who skillfully pulled them together underthe Republican tent. By 1994, the coalition was strong enough to gain control of Congress, and Republicans truly became the nation's governing party for the first time since 1932.

Mr. Sager argues that George W. Bush has effectively destroyed this extremely successful political partnership by siding with the traditionalists and ignoring the libertarians. He threw a few tax cuts at the latter, like bones to a dog, but at the same time endorsed a vast expansion of government spending that will soon lead inevitably to tax increases.

I tend to think most mainstream economists are by nature libertarians, so in that sense I would say Bush has lost support of them. Probably a notable exception is hard-cored supply sider like Larry Kudlow, but I have to admit my bias against supply siders that they are taking an intellectual refugee by avoiding the debate between (New) Keynesians and New Classicals in the dynamics of short run aggregate demand.