LobbySpend tracks 10 organizations headquartered in District of Columbia with combined federal lobbying spending of $979.8M over the reporting period.

US Chamber of Commerce leads lobbying spending in District of Columbia with $387.8M in total reported expenditures, earning an Influence Score of B.

Organizations headquartered in District of Columbia lobby on 29 different policy areas. 114 registered lobbyists have former government positions (revolving door connections).

Sources: Senate Office of Public Records LDA Filings

Last updated: March 2026

The this entity record above pulls directly from the Senate Lobbying Disclosure Office LD-2 filings. What follows is the per-entity context — how this entity sits in the broader U.S. federal lobbying disclosure distribution and which underlying factors drive the headline numbers.

The methodology behind every numeric value on this page is publicly documented on the the Senate Lobbying Disclosure Office LD-2 filings portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.

Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. lobbying activity. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.

Source: U.S. Senate Lobbying Disclosure Act database, 2026.