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Whether they do their own lobbying or hire it out to DC’s infamous K Street firms (and often they do both), these organizations spend the most trying to influence government policy.

Top Spenders

NOTE: Figures on this page are calculations by the Center for Responsive Politics based on data from the Senate Office of Public Records. Data for the most recent year was downloaded on July 23, 2020 and includes spending from January 1 - June 30. Prior years include spending from January through December.

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