Top Organization Contributors

Totals on this page reflect donations from employees of the organization, its PAC and in some cases its own treasury. These totals include all campaign contributions to federal candidates, parties, political action committees (including super PACs), federal 527 organizations, and Carey committees. The totals do not include contributions to 501(c) organizations, whose political spending has increased markedly in recent cycles. Unlike other political organizations, they are not required to disclose the corporate and individual donors that make their spending possible. Only contributions to Democrats and Republicans or liberal and conservative outside groups are included in calculating the percentages the donor has given to either party.

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