How Polarized is Labor? NathanNewman.org - News and Views
Take this story from South Carolina, where Dean was talking about NAFTA before a ground of workers:
Dr. Dean, as he does daily, acknowledged his support for Nafta and other treaties but said he would sign no more until trading partners raised their labor and environmental standards. Next to Dr. Dean on the rostrum here was the president of the local steelworkers' union, who could not hold the rally at his local's hall because his parent union has endorsed Mr. Gephardt.
The international union can (at times) control how union resources are used and probably block a formal endorsement, but this kind of appearance by a local industrial union leader shows the 'industrial versus service union split' is not the overwhelming reality many might worry about.