http://www.commoncause.org/publications/sm2001/smstudynov.htm
I think it's astounding the heat ENRON is getting for it's political donations. Point in fact, 35 other organizations gave more, and the # 1 cash cow was the Federal Employees Union, with their money going to Democrats.
(I heard Brian Lamb say this information was on C-Span's ENRON show last night. I believe the source was Fred Werthheimer of Common Cause)