Your Innovative Platform for an Effective Legislative Process

Build connections, harness data-driven insights, and increase efficiency with Legis1, an extensive congressional, legislative, and lobbying data platform.
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3,000 +


136,000 +

Congressional Staffers

26,000 +


52,000 +

Congressional Witnesses

39,000 +


12,000 +

Lobbying Firms

57,000 +

Lobbying Clients

198,000 +


Build Connections

Insightful profiles of members, staff, committees, hearings, witnesses, legislation, issue areas, lobbyists, lobbying firms, and lobbying clients. Connections between current and former colleagues will reveal the people you need to support your goals.

Data-Driven Insights

Benchmark your organization. Legis1's analytics provides unique insights into legislative effectiveness, staff turnover, staff experience, compensation, issue trends, lobbying clients and more.

Increase Efficiency & Capabilities

Legislative tools will help you understand the parliamentary process and committee procedures, draft legislation, track hearing information, and more.

Who uses Legis1?

Legis1 is a valuable resource for organizations of all shapes and sizes. Users include: Congress, government agencies, lobbying firms, media, public affairs, corporations, associations, think-tanks, universities, and other organizations.

How does Legis1 compare?

Unique Data

Legis1 has more congressional member, staff, committee, witness, hearing, and lobbying industry data than other providers. Legis1's unique datasets include integrated hearing and witness information, staff and member networks, and lobbying activities linked to legislation and bill sponsors.

Unique Analytics

Legis1 provides insights into each congressional office, committee, and lobbying firm with unique analysis including legislator effectiveness, turnover, experience, compensation analytics, and staffer network maps over time.

Innovative Tools

Legis1 tools help members and staff understand their procedural options during markups and aide in legislative drafting preparation.

Academics and Thought Leaders

The Sunwater Institute conducts theoretical and applied research aimed at improving Congress’s institutional knowledge, processes, decision-making, and efficiency. Using this academic research the Legis1 team develops practical tools, analytics, and datasets.


Legis1 is built on over 45 years of history in lobbying and congressional data with the combined legacies of Washington Representatives,, The Original US Congress Handbook, and US Congress Online.

We are a Nonprofit

Legis1 is developed by the Sunwater Institute, a nonprofit, nonpartisan think-tank with a mission to improve the legislative process. Sunwater Institute revenue is reinvested into Legis1 to continue to enhance the tools, data, and analysis to provide cutting-edge resources.
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