Give credit to big labor. Seeing the battle lost in Wisconsin, at least for now, it's onto a new battlefield. Governor Snyder has already been criticized by some conservatives as not being more "Walker-like." This thing would make it virtually impossible for anyone in Michigan to be the next Scott Walker on public employee unions.
Michigan has been near depression for years. This would give unions absolutely crippling power. Wisconsin was the state where the unions thought they couldn't lose. They think the same thing again here. A defeat in Michigan would be devastating to them.