Sen. Hillary Rodham Clinton is set to join a small cadre of politicians speaking before a large gathering of state and local government employees meeting this week in San Francisco.

Clinton (D-New York) is scheduled to appear before American Federation of State, County and Municipal Employees union delegates on Thursday, organizers said. The senator is also expected to use the trip to the Golden State to do some fundraising to help retire the debt accumulated from her recent hard-fought bid to become the Democratic Party's presidential nominee.

Joining Clinton -- via satellite -- will be the presumptive Democratic Party presidential nominee, Barack Obama.

Rounding out the week's keynote political speeches will be an address by Maryland Gov. Martin O'Malley scheduled for Friday.

Global warming czar Al Gore is also scheduled to speak to the union delegates, but members of the media have been told they will be barred from attending the speech at the request of the former vice president.