The biggest for the best.

With over 1.2 million members in the US and Canada, the United Steelworkers is the largest industrial union in North America, and the USW is for John Edwards.

Former Sen. John Edwards will start his Labor Day in Pittsburgh to accept a presidential endorsement from the United Steelworkers.

Mr. Edwards is expected to appear with United Steelworkers president Leo Gerard at a 9 a.m. rally at the Mellon Arena, the kickoff site for the city's annual Labor Day Parade.

Hat tip to philgoblue at Michigan for Edwards (and sorry 'bout your Wolverines).