$37.7B in Lobbying. 726.3K Filings. 23.5K Lobbyists.
$37.7B Spent Buying Policy. We Tracked Every Dollar.
The only platform that cross-references lobbying filings with federal contracts, Medicare spending, and workforce data. Every filing. Every connection. Every dollar. All from public Senate LDA disclosures.
Data current through 2025 · Senate LDA filings · Updated February 2026
Key Findings
Numbers that reveal how influence really works in Washington
Firms with ex-government lobbyists charge dramatically more than those without
DC's per-capita lobbying spending — more than any state by orders of magnitude
The return on lobbying investment for the top federal contractor — $270K in, $13.4B out
Organizations whose lobbying spending grew 100%+ — the new influence gold rush
Featured Investigations
Data-driven journalism that follows the money
The 22,000% Return on Lobbying
Companies spend millions lobbying and get billions in federal contracts. We calculated exactly how much they get back.
Read Investigation →5,000 Former Officials Now Lobby Congress
From White House advisors to congressional chiefs of staff — the revolving door exposed with every name and salary.
Read Investigation →Big Pharma's $4.4 Billion Bet
The pharmaceutical industry outspends every other sector on lobbying. Here's exactly where all that money goes.
Read Investigation →DOGE vs. The Lobbying Machine
What happens when government efficiency meets the $38 billion lobbying industry? A collision course analysis.
Read Investigation →Crypto's K Street Invasion
How the crypto industry went from zero lobbyists to one of the fastest-growing lobbying forces in Washington.
Read Investigation →Explore the Data
Interactive tools and analyses you won't find anywhere else
Top Clients
Who spends the most to influence Congress
Revolving Door
Government officials turned K Street lobbyists
Lobbying ROI Calculator
Calculate return on lobbying investment
Influence Score
Composite ranking of the most influential clients
Spending Trends
How lobbying spending has changed over time
Industry Breakdown
Which sectors dominate the lobbying game
Influence Network
Map the connections between lobbyists and firms
Foreign Lobbying
Foreign governments lobbying the US
What Lobbyists Actually Write
The language of influence — trending words, bills, and lobbying descriptions
The Arms Race
Which issues are surging in lobbying spend
Agency Pressure
Which government agencies get lobbied the most
Geographic Analysis
Where lobbying money comes from
Compare Tool
Compare any clients or firms side by side
What Makes Us Different
Not just another database — we do the analysis others don't
Original Investigations
25+ data-driven articles that connect lobbying data to real-world outcomes — contracts, regulations, and policy changes.
Cross-Dataset Intelligence
We link lobbying filings to federal contracts, Medicare spending, and government workforce data. Nobody else does this.
Revolving Door Tracking
We track 5,000+ former government officials now working as lobbyists, including the premium they charge.
ROI Calculations
We calculated the actual return on lobbying investment — how much companies spend vs. what they get in contracts.
Influence Scoring
Our composite influence score ranks clients across 5 dimensions: spending, connections, issues, growth, and network.
100% Free & Open
No paywall. No login. No ads. All processed data is freely downloadable for journalists, researchers, and citizens.
From TheDataProject.ai
Our Family of Transparency Sites
This Data Belongs to You
Every lobbying filing shown here is a public record required by the Lobbying Disclosure Act. We just made it searchable, analyzable, and understandable.