Online encyclopedias in all fields of study. Great sources for overviews, key concepts, and further reading.

This is a large database of reports on Health Care, Social Welfare and Housing, Education, Immigration, Veterans and more.

EveryCRSReport.com: Great starting point for laws, agencies, budgets.

Current Congressional activities, including full text U.S. House and Senate bills, committee information and details of the legislative process.

A compilation of all permanent laws in force in Washington State

Policy statements from 1948 onward.

Non-partisan research and policy institute working on federal and state fiscal policies and public programs that affect low- and moderate-income Americans.

The National Institute on Money in State Politics provides this "free, nonpartisan, verifiable archive of contributions to political campaigns in all 50 states", with an extensive range of searchable data and reports.

ISP is a nonprofit organization helping to prepare social work practitioners and students for an active role in shaping the social policies that impact their clients and communities.

KFF tracks trends in all areas of the national health landscape, many of which can impact Washington state. They offer alerts and in-depth analysis on a number of health policy topics.

SWPI examines issues that relate to the work of social workers.

This is both a news site and an annual conference, which is very informative on state and regional policy issues. “State of Reform is a stakeholder-driven initiative that tries to bridge the gap between the worlds of health care and health policy. We try to develop vehicles for the dissemination of information, case studies, best practices, strategic insight, and lessons learned.”

This group produces several reports, including one called Community Checkup which uses benchmarking to compare common measures in Washington against national measures.

This site is good for alerts, reports and other outreach.

This site has a list of state and national policy resources, not just healthcare.

This non-partisan public research group is based in Olympia, and was formed in 1983. They produce reports on a range of topics:
Benefit-cost analysis
Children’s services
Criminal justice: Adult corrections
Criminal justice: Juvenile justice
Employment/Welfare
General government
Health care
Higher education
Inventories
Mental health
Pre-K-12 education
Prevention
Public health
Substance abuse
Transportation