What Is Lobbying?
Lobbying is the act of attempting to influence government decisions by directly contacting elected officials, their staff, or executive branch officials. It is a constitutionally protected activity rooted in the First Amendment right to petition the government for redress of grievances. In the federal context, lobbying encompasses any paid effort to influence legislation, regulations, executive orders, or the nomination of individuals requiring Senate confirmation.
The scale of federal lobbying is enormous. LobbySpend tracks 500 organizations that have collectively disclosed $5.8B in lobbying expenditures. These organizations employ 3,489 registered lobbyists, of whom 1,026 have “revolving door” connections -- meaning they previously held government positions before entering the private sector lobbying industry.
Not all advocacy counts as lobbying under federal law. The Lobbying Disclosure Act of 1995 sets specific criteria: an individual must be paid, must make more than one contact with a “covered official” (members of Congress, senior staff, and senior executive branch officials), and must spend at least 20 percent of their time on lobbying activities for a particular client in a quarterly period. Activities that fall below these thresholds are not subject to federal registration and reporting requirements.
Who Lobbies?
Three types of entities engage in federal lobbying. Lobbying firms (also called contract lobbying firms or “registrants”) are professional operations that represent multiple clients before Congress and federal agencies. They employ teams of lobbyists, often including former members of Congress and senior staffers, and charge clients fees for their government affairs services. In-house lobbyists are employees of corporations, trade associations, or other organizations whose job responsibilities include direct government engagement. The third category includes organizations that use both in-house teams and hired external firms.
The biggest spenders in LobbySpend’s database illustrate the diversity of lobbying organizations. The top 10 spenders include:
| Rank | Organization | Total Spend |
|---|---|---|
| 1 | US Chamber of Commerce | $387.8M |
| 2 | National Association of Realtors | $348.2M |
| 3 | Pharmaceutical Research & Manufacturers of America | $135.8M |
| 4 | American Hospital Association | $128.0M |
| 5 | Blue Cross Blue Shield Association | $120.0M |
| 6 | American Medical Association | $107.6M |
| 7 | Meta Platforms | $98.6M |
| 8 | Amazon.com | $98.0M |
| 9 | Business Roundtable | $84.2M |
| 10 | National Association of Broadcasters | $78.9M |
The Disclosure Process
The Lobbying Disclosure Act requires organizations to register within 45 days of making their first lobbying contact. Registration involves filing an LD-1 form with the Secretary of the Senate and the Clerk of the House, which identifies the lobbying organization, each client, the general and specific issues to be lobbied on, and the individual lobbyists who will make contacts. Each registered lobbyist must also disclose any “covered positions” -- prior government roles that qualify as revolving door connections.
After registration, organizations file quarterly activity reports (LD-2 forms) that detail the specific issues lobbied on, the branches and specific agencies of government contacted, and the amount spent. Lobbying firms report the income received from each client, while organizations that lobby in-house report their expenses. These quarterly filings form the core dataset behind LobbySpend and are publicly searchable at lda.senate.gov.
Additionally, the Honest Leadership and Open Government Act of 2007 added a requirement for semi-annual LD-203 reports, which disclose campaign contributions made by lobbyists, payments to presidential libraries and inaugural committees, and contributions bundled by lobbyists. These reports create a documented link between lobbying activity and campaign finance.
What Issues Get Lobbied?
The Senate classifies lobbying activity into 65 general issue areas, ranging from Taxation and Health Care to Defense, Energy, and Technology. Organizations must identify the relevant issue codes in each quarterly filing. The most-lobbied issues by total spending include:
| Issue | Orgs | Spend |
|---|---|---|
| Government Issues | 498 | $5.6B |
| Taxation | 250 | $4.3B |
| Trade | 107 | $2.0B |
| Health Issues | 98 | $1.8B |
| Environment/Superfund | 93 | $1.8B |
| Budget/Appropriations | 28 | $1.5B |
| Labor/Workplace | 69 | $1.5B |
| Financial Institutions | 58 | $1.3B |
Many organizations lobby on multiple issues simultaneously. The breadth of an organization’s issue portfolio is one of the three factors in LobbySpend’s Influence Score, reflecting the scope of their policy engagement across the federal government.
The Revolving Door
Of the 3,489 registered lobbyists tracked by LobbySpend, 1,026 have revolving door connections -- they previously served in government before becoming lobbyists. These former officials bring institutional knowledge, personal relationships with current officials, and understanding of legislative and regulatory processes that make them particularly effective advocates for their clients.
Federal law imposes “cooling-off periods” to mitigate the revolving door’s effects. Former senators face a two-year lobbying ban, former House members face a one-year ban, and senior executive branch officials face restrictions on lobbying their former agencies. However, former officials can still provide “strategic consulting” during these periods without making formal “lobbying contacts,” a practice known as shadow lobbying.
The revolving door is the third factor in LobbySpend’s Influence Score, weighted at 30%. Organizations with high revolving door ratios -- where a large percentage of their lobbyists have government backgrounds -- receive higher scores in this component, reflecting the enhanced access and expertise these connections provide.