Gallup poll reveals interesting divide based on job classification

In my opinion Gallup makes a major mistake counting teachers as "professionals", today's teachers are ill-educated union members with typically low career options and test scores and the more than 7 million of them will always make the "professional" category democratic supporting.

Construction, mining manufacturing, farming, fishing -- these are traditional blue collar jobs. And Romney is blowing away Obama in those categories.
Another big and growing category is retail sales persons. Here again, Romney has a wide lead over the president.
The president leads among service workers and professionals. What these people might have in common is their membership in a public or private union or professional societies dominated by liberals. Police, firefighters, teachers, health care workers, hotel employees, and also accountants, scientists, and nurses -- those with post-graduate degrees -- support the president.