OpenSecrets uses a hierarchical coding system to classify organizations by industry and interest group. At the top level are 13 sectors — ten covering business groups and one each for "labor," "ideological/single-issues," and "other." Below that are about 100 industries, more detailed than the broad sectors.

Industries

Industry Total
Pharmaceuticals/Health Products $318,598,801
Electronics Mfg & Equip $167,052,582
Insurance $156,864,622
Real Estate $136,437,832
Business Associations $122,840,111
Hospitals/Nursing Homes $117,774,880
Oil & Gas $113,249,376
Securities & Investment $111,423,720
Electric Utilities $110,692,019
Telecom Services $109,559,264
Misc Manufacturing & Distributing $109,139,755
Health Services/HMOs $109,008,087
Air Transport $108,937,142
Civil Servants/Public Officials $95,311,451
Health Professionals $88,886,950
Education $78,590,129
Internet $74,503,414
Automotive $65,293,225
Commercial Banks $61,846,553
TV/Movies/Music $56,795,804
View all industries

NOTE: Figures on this page are calculations by OpenSecrets based on data from the Senate Office of Public Records. Data for the most recent year was downloaded on February 21, 2024 and includes spending from January 1 - December 31. Prior years include spending from January through December.

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