Bushism isn't the only one of those terms to an insult.

Blairism. Some Views...

Realists view:
Promising that you'll make everything better, doing very little, and hoping that whenever the people notice, they still hate the opposition.

The Lefts view:
Watered down Thatcherism betraying everything the Labour party has ever meant etc ad infinium

The Rights view:
Watered down Socialism taking the country back to bad old days of the 70's.

All:
Incompetently run, and full of bad ideas.