All 20 of the 20 largest industries donated more to Democrats in 2010 than Republicans.
Give us a link, so we can tear apart whatever bogus assumptions underlie that argument.
I'm going to guess that oil and natural gas now aren't among the 20 largest industries in America, despite Exxon breaking profit records for any corporation, past or present—or that they donated to Dems in 2010?
Employees in 18 of the 20 industries that gave the most money to political candidates in 2010 contributed more to Democrats than Republicans. The only exceptions were commercial banks (barely) and oil and gas (by a wider margin).
http://www.opensecrets.org/industries/mems.php
I didn't know "Retired", "Leadership PACs", "Democratic/Liberal", or "Public Sector Unions" were considered industries. Also, some of these are not industries themselves but individuals that happen to be in the industry (and there's going to be a big difference between, say for example, how Ford employees vote and who their company supports).
Even then, a cursory glance shows that a lot of the partisan breakdowns are skewed because many companies would be heavily Republican if you discount the huge donations they gave to Reid, Schumer, and the Democratic chairman of the committee that regulates whatever industry they're in.
