For Friday's Comment is free I wrote: 'The biggest donors to John McCain's presidential campaign are those on more modest means." A couple of people have emailed me asking for more on that and I thought others might be interested too.
So: here are the Republican shares of political giving from various social groups:
The unemployed: Less than 1%
University professionals: 9%
Students: 25%
CEOs: 29%
Science community: 33%
Corporate "presidents": 46%
Janitors, custodians, cleaners, sanitation workers, factory workers, truckers, bus drivers, barbers, security guards, secretaries, contractors, hardhats, plumbers, stonemasons, electricians, carpenters mechanics, and roofers: 75%
Please check my calculations from this source.