About Influence Explorer

About Us

Influence Explorer is a project of Sunlight Labs, the technology arm of the Sunlight Foundation.

Our Data

Our data is provided by the Center for Responsive Politics, the National Institute for Money in State Politics, Taxpayers for Common Sense, the Project On Government Oversight, the EPA and USASpending.gov.

For more information on how we use this data, see our campaign finance, lobbying, lobbyist bundling, earmarks, federal spending and EPA ECHO methodology pages.

Influence Explorer provides an overview of campaign finance, lobbying, earmark, contractor misconduct and federal spending data. To search the underlying records or download the data in bulk, visit the Data section of Influence Explorer. To see when each data source was last updated, see the data changelog.


Influence Explorer is built entirely on the public Influence Explorer API. For more information see the API docs or the Python docs.

Contact Us

For questions or comments, please use the Feedback widget on the side of the page.