Left, Right Proxies Push on Iraq

Tom Matzzie, Washington director of MoveOn.org, who has helped fund Americans United as MoveOn pursues its own antiwar campaign. He headed online organizing for John F. Kerry's unsuccessful presidential bid in 2004 and was online mobilization director for the AFL-CIO.

Gerald McEntee, president of AFSCME, the union of state and municipal employees and a fixture in Democratic fundraising.

John J. Sweeney, president of the AFL-CIO, who saw his union splinter with upstart service workers unions but has worked with the splinter group to help fund Americans United.

Andy Stern, president, the Service Employees International Union, a leader of the splinter group and an aggressive backer of Democratic political causes.

Anna Berger, head of Change to Win, the umbrella labor organization and budding AFL-CIO rival.

Larry Cohen, president, Communications Workers of America, who has moved to unionize white-collar, high-tech workers and may see antiwar activism as a hook.

Reggie Weaver, president of the National Education Association, the powerful teachers lobby.

-- Jonathan Weisman