ACORN, Living Wage Resource Center
ActBlue, Netroots Candidates
American Conservative Union
American Federation of State, County and Municipal Employees (AFSCME)
American Bankers Association
American Civil Liberties Union
American Enterprise Institute
American Federation of Labor and Congress of Industrial Organizations (AFL-CIO)
American Institute for Full Employment
Americans for Tax Reform
Apollo Alliance
Cato Institute
Campaign Legal Center
Campaign Finance Institute
Campaign for America's Future
Center for American Progress
Center on Budget and Policy Priorities
Center for Corporate Policy
Center for Policy Alternatives
Center for Public Integrity
Center for Responsive Politics
Change-Congress.org: Reclaim Your District
Change to Win Federation
Christian Coalition of America
Citizens against Government Waste
Citizens for Tax Justice
Citizen Works
Common Cause
On the Commons
Communities Connect
Community-Wealth.org
Congressional Budget Office
Congressional Professional Caucus
Congressional Record
Corporate Accountability International
Democracy for America
Democratic Leadership Council
Democratic Party
Democratic Congressional Campaign Committee
The Democratic Party
Economic Analysis and Research Network
Economic Policy Institute
FactCheck.org: Holding Politicians Accountable
Fair Vote
Federal Reserve Board, 2004 Survey of Consumer Finances
FollowTheMoney.org: The Nation's Most Complete Resource for Information on Money in State Politics
Friends Committee on National Legislation
Global Action on Aging
Global Policy Forum
The Heritage Foundation
The Hill: The Newspaper for and about the U.S. Congress
Independent Progressive Politics Network
Inequality.org
Institute on Taxation and Economic Policy.
International Human Rights Instruments
International Labor Organization
Job Tracker
League of Conservation Voters
The Libertarian Party.
MAPLight.org: Money and Politics: Illuminating the Connection.
Microfinance Network
MoveOn.org
National Association of Manufacturers
National Center for Economic and Security Alternatives
National Committee to Preserve Social Security and Medicare
National Conference of State Legislatures
National Governors Association
The National Institute on Money in State Politics
National Republican Campaign Committee
National Resources Defense Council
National Taxpayers Union and National Taxpayers Union Foundation
OpenCongress.org: One-stop Shopping for What's Really Happening in Congress
OpenSecrets.org: Your Guide to the Money in U.S. Elections
People for the American Way
The Pew Research Center for the People and the Press
Physicians for a National Health Program
PoliticalMoneyLine
Progressive Policy Institute
Progressive Democrats of America
Progressive States Network
Project on Government Oversight (POGO)
Project Vote Smart: The Voter's Self-Defense System.
Public Agenda
Public Campaign Action Fund
Public Citizen
Republican National Committee Issues
Service Employees International Union (SEIU)
Stateline.org: Politics and Policy Issues State by State
The Tax Foundation
Taxpayers for Common Sense
Tax Policy Center: A Joint Venture of the Urban Institute and the Brookings Institution
Truthout.org
UNITE HERE
U.S. Chamber of Commerce Advocacy Network: Voteforbusiness.com
U.S. Constitution: Preamble, Articles, Amendments
U.S. Department of Defense,
News about the War on Terrorism
U.S. Department of Justice,
Life and Liberty
U.S. Department of Justice, What is the U.S. Patriot Act?
U.S. Department of the Treasury, Bureau of the Public Debt
U.S. National Debt Clock
U.S. Public Interest Research Group
VoteTrustUSA
WashingtonPost.com's U.S. Congress Votes Database
Working America: Community Affiliate of the AFL-CIO.