A data point.

Or three. Chris Bowers has some numbers.

· Edwards: United Steel Workers, United Mine Workers of America, International Brotherhood of Carpenters. 2.3 million combined members.

· Clinton: United Transportation Union, International Association of Machinists and Aerospace Workers. 800,000 combined members.

· Dodd: International Association of Firefighters. 271,000 members

Of course, membership numbers aren't everything, but they aren't nothing, either.