Maplight.org has a configurable widget that tracks donations to Presidential candidates and graphs them on your web site. Let's see if I can insert the proper code (exciting stuff for neo-geeks)!
Presidential Money Race Widget
OK, I must not be understanding something. I can't get the object to embed correctly. This is a work in progress.
Later that night: I went back to the website and saw that they had changed the embed code. Let's try again: