The folks over at the Center for American progress Action Center put together a nice video explaining the how the "election" process that unions have to go through makes it nearly impossible to form a union. Particularly important is that this election doesn't look anything like what people think of when they hear the word "election." Imagine if during the presidential campaign, your supervisor could pull you into a room and explain slowly and clearly why it was very important to the company that you supported John McCain. And then, if you said you didn't, you might mysteriously find that you were working bad shifts the next week, while your friend who attached the complimentary McCain/Palin sticker to her car is suddenly getting the prime slots.
I continue to think that the unions made a terrible mistake emphasizing their solution to this problem (card check) rather than the problem itself. But their bad strategy doesn't obviate the need to reform blatantly anti-worker laws.