I don't know who they are, but I have gotten calls from them about once every 2 weeks or so, this last one was only about a week difference from last call.

It could be related to the elections, but there persistent.

I never listen to what they say, I just pickup the phone and hang up every time.

If anyone knows who these people are, that would be great information.

From what I can tell after doing more research, there:
"The Washington State Labor Council, AFL-CIO"
[http://www.wslc.org/contact.htm]

I'm guessing election related, well see after November 02, I guess.