I spent a few hours going through the FEC database, exploring the difference in donor type between Lamont and Lieberman. The FEC only requires disclosure of donors who give more than $250, so I couldn't find out everything I wanted, but it's an interesting journey nonetheless. [update: This diary doesn't include Q2 numbers].
One pattern I've noticed in Lieberman's big dollar donor base is that there are a LOT of CEOs that want to support his brand of politics. 73, to be precise. I didn't recognize a lot of their companies, since I don't know that much about the large business world, and some of them are probably small companies. But here's a list of the ones I did recognize.
Choicepoint
General Dynamics
Cisco Systems
Citigroup Property
Costco
Chicago Mercantile Exchange
Southwest Airlines
People's Bank
ING US Financial Services
Jetblue
Dominion
Loew's Hotels
Chiquita Brands
Pfizer
Ned Lamont had 3 CEO backers.
So I guess Lieberman is crushing Lamont among CEOs.
And yes, It's that Choicepoint.