From The Washington Post:

The conservative groups that supported Michigan’s new “right to work” law — winning a stunning victory over unions, even in the heart of American labor — vowed Wednesday to replicate that success elsewhere.

But the search for the next Michigan could be difficult.

“If Michigan can do it, then I think everybody ought to think about it,” said Mark Mix, president of the National Right to Work Legal Defense Foundation. He said he thinks at least one more state will adopt such a law before the end of 2013, and listed Alaska, Missouri, Montana and Pennsylvania among the top contenders. “Very confident. It will happen. [But] I can’t tell you where the next one is.”