Here’s a site where you can enter your address or name into the Neighbor Search engine and discover which candidates the people in your surrounding area are supporting.
It notes size of donation and occupation along with the donor’s street address. For instance, here’s one that showed up on my search:
Dr. Lawrence A. Farwell contributed $2,000 to the Bush campaign. His specialty?
Brain Fingerprinting:
A New Paradigm in Criminal Investigations and Counterterrorism
I know this thanks to Dr. Larry, who described his occupation and business like this:
Scientist / Executive
Brain Fingerprinting Laboratorie