Top Spenders 2009 Lobbying Client Total.Notice the large difference between first and second place.
US Chamber of Commerce $144,496,000
Exxon Mobil Corporation $27,430,000
Pharmaceutical Research & Manufacturers of America $26,150,520
General Electric $25,520,000
Blue Cross/Blue Shield $22,715,439
Pfizer Inc $21,930,000
AARP $21,010,000
American Medical Association $20,830,000
Chevron Corp $20,815,000
National Association of Realtors $19,477,000
American Beverage Association $18,850,000
American Hospital Association $18,347,176
ConocoPhillips $18,069,858
Verizon Communications $17,820,000
The Boeing Company $16,850,000
FedEx Corp $16,370,000
BP $15,990,000
National Cable & Telecommunications Assn $15,980,000
Northrop Grumman $15,180,000
AT&T Inc $14,729,673
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source: http://www.opensecrets.org/