Is there anyone here who really believes that every major campaign organization since, say, 2004 hasn't been completely owned up? What, you think the people that build the software and IT environments for campaigns --- sites that by design have millions of users with persistent accounts, and thousands of staff members at varying levels of privilege --- are the creme de la creme of software security talent?
Because, sure, I mean, everyone I know in software security and pentesting tells me "my first career choice is to go work in IT for the DNC and the GOP", but somehow along the way Google manages after a mighty struggle to outbid the 70k/year cost-center IT organizations offer for security talent.
If there was any interesting "oppo research" on McCain in the DNC servers during the '08 election, I will bet all the money in my pocket versus all the money in yours that the Chinese read all of it long before everyone on the official CC list did.