The other factor for Obama would be with fiscally conservative Blue Dog Democrats and other Democrats who stood with Obama on the middle-class tax pledge.
The Republicans, for instance, pointed to a law that Dukakis had vetoed as governor that would have required teachers to conduct the Pledge of Allegiance with their class.
Then there is a third class, known as similares, medicines which, drugmakers pledge, have the right amount of active ingredient but aren't tested in the body.