Professional and service workers favor Obama, all the rest favor Romney - Gallup

[progree]

http://www.gallup.com/poll/154883/Professionals-Pick-Obama-Execs-Business-Owners-Romney.aspx
(On edit - I should have said "clerical or office workers" are tied, rather than favoring Romney)
Below is my summary in my words --

In order of the largest number of workers (descending order)

Margin is difference between Obama and Romney. For example, 45% of all workers chose Obama and 47% chose Romney, a difference of 2% in favor of Romney (a margin of -2% in favor of Obama); while 51% of professionals choose Obama and 43% choose Romney, a margin of 8% in favor of Obama.

Margin Type of Worker
-2 All workers
8 Professionals (lawyers, doctors, scientists, teachers, engineers, nurses, accountants, ....)
13 Service worker (police, firefighers, waiters, janitors,...)
-7 Manager or executive
-13 Sales worker
0 Clerical or office worker
-22 Construction or mining worker
-16 Manufacturing or production worker
-19 Business owner
-8 transportation worker
-18 installation or repair worker
-37 farming, fishing, or forestry worker

Arranged in descending order of support for Obama (only the first 3 categories favor Obama over Romney):

13 Service worker (police, firefighers, waiters, janitors,...)
8 Professionals (lawyers, doctors, scientists, teachers, engineers, nurses, accountants, ....)
0 Clerical or office worker
-2 All workers
-7 Manager or executive
-8 transportation worker
-13 Sales worker
-16 Manufacturing or production worker
-18 installation or repair worker
-19 Business owner
-22 Construction or mining worker
-37 farming, fishing, or forestry worker

Voters with postgraduate education are more liberal than average, and constitute a strong Obama support group.

Results are based on telephone interviews conducted as part of Gallup Daily tracking April 11-May 21, 2012, with a random sample of 13,933 workers who are registered voters, aged 18 and older, living in all 50 U.S. states and the District of Columbia. Interviews are conducted with respondents on landline telephones and cellular phones... Each sample includes a minimum quota of 400 cell phone respondents and 600 landline respondents per 1,000 national adults, with additional minimum quotas among landline respondents by region. Landline telephone numbers are chosen at random among listed telephone numbers. Cell phone numbers are selected using random-digit-dial methods. ... Samples are weighted by gender, age, race, Hispanic ethnicity, education, region, adults in the household, and phone status (cell phone only/landline only/both, cell phone mostly, and having an unlisted landline number).