I have created another simple graph based on data from the Federal Election Commision about political donations to the Obama and McCain campaigns. This one shows the average contribution amount for the various occupations of the donors. I restricted the analysis to occupations having at least 1000 separate donations. There were 106 occupations that met this criteria and the top 50 are shown below.
A few observations from the graph:
There is a related analysis about which occupations supported Obama or McCain the most.
The data available at the time of this analysis includes contributions up to July 31st, 2008. I have combined a few obvious occupation spelling variations together. For example, 'home maker' has been combined with 'homemaker', and 'cpa' and 'certified public accountant' combined with 'accountant'. Several high-level executive occupations have been combined into 'executive' - namely 'coo', 'chief operating officer', 'cio', 'cfo', 'exec', and 'cto'. There are many other variations that could plausibly be combined - 'doctor' with 'physician' or 'attorney' with 'lawyer' for example. If anyone wants to verify my analysis and is interested in the complete list of combinations I used just send me an email.