That in a nutshell is the thesis, as I understand it so far

And on this particular point, it seems to me that Krugman is saying Republicans weren't bad until the party was hijacked by Movement Conservatism began winning elections.

I won't bother citing any more of Krugman's work not because you disagree with it, but because you're not willing to acknowledge it at all.

This book epitomizes what is wrong with American liberalism. Krugman was a fine, perceptive international trade theorist, but he is a political hack, with nothing new to offer. There is one problem as far as Krugman is concerned: inequality. But inequality is an intellectual abstraction, not a politically motivating issue. People hated the Robber Barons because they were robbers and barons, not because they were rich. Oprah Winfrey and Bill Gates do not send the Pinkerton men out to protect their ill-gotten gains; nor to the other super-rich. Socialists' ringing political slogans dealt with fairness, social progress, and power to the people, not "inequality." Moreover, a truly progressive movement must built on technical progress that is impeded by the reigning powers that be (Sam Bowles and I call this efficiency-enhancing egalitarian redistribution), not the beggar-thy-neighbor, zero-sum-game sort of redistribution favored by Krugman.

...

Krugman's vision for the future has three key premises, all wrong.

First, he believes progressives can win on a platform of redistributing from the rich. However, no one cares about inequality. People care about injustice, unfairness, poverty, sexual predators, family values, gay marriage, terrorism, and many other problems of everyday life. People don't care about Gini distributions and other abstractions. Moreover, Krugman should know that if the wealth were redistributed to the middle class, the US investment rate would fall, since the rich save their money and it is translated into investment, whereas the middle classes would spend their gains on consumption, thus driving out investment. A "soak the rich" policy simply cannot work to the advantage of the middle classes.

Second, Krugman would strengthen the labor unions, which he credits for their egalitarian effects. However, unions were strong only when industry was highly non-competitive in such areas as automobiles and steel. The oligopolistic character of mid-twentieth century industry, with a few countries in the lead, made fighting over the excess profits highly rewarding. With globalization, there are no excess profits to be fought over. Thus, it is not surprising that most successful unions in the USA are public service, not private (e.g., teachers, government employees). There is no future in unionism, period.

Third, Krugman believes that liberalism can be restored to its 1950's health without the need for any new policies. However, 1950's liberalism was based on southern white racism and solid support from the unions, neither of which exists any more. There is no future in pure redistributional policies in the USA for this reason. Indeed, if one looks at other social democratic countries, almost all are moving from corporate liberalism to embrace new options, such as Sarkozy in France (French socialists have the same pathetic political sense as American liberals, and will share the same fate).

Ididar: I can't disagree with anything you said ... I just wish that was the first post as a response.