I keep seeing commercials bashing his vote on health care, Wonder who is behind that.
Did you happen to catch the part of the ad that says - "This ad paid for by XXXXX"? Because of campaign-finance laws, they have to disclose the name of the 501C-3 that's paying for the ad. Once you have that, the public filings generally allow you to find out the names behind the organization, FWIW.