Here's the article from Roll Call:
Just as the Service Employees International Union and the American Federation of State, County and Municipal Employees endorsed Dean's bid for the Democratic presidential nomination Wednesday, SEIU is expected to announce its support for Obama on Monday. AFSCME is considered highly likely to follow suit in January.
The American Federation of Teachers, the second largest teachers' union in Illinois, representing 90,000 educators, endorsed Obama last week. Taken alone, garnering endorsements from two of the largest and most powerful unions under the umbrella of the AFL-CIO is a noteworthy feat. But in the context of both the presidential and Illinois Senate races, the combined support of the two rival unions is also viewed as a blow to Dean's and Obama's opponents, who had counted on the support of organized labor.
Much like Rep. Richard Gephardt (D-Mo.), who has staked his presidential bid on the support of labor in key states like Iowa, Illinois Comptroller Dan Hynes (D) is also counting on the support of labor to help push his Senate bid over the top.
Here's the link:
http://www.rollcall.com/pub/49_53/politics/3595-1.html