We're #1

According to an analysis in the NYT, Ohio's anti-union law is tougher than Wisconsin's:

It is perhaps surprising that Ohio faced more limited public demonstrations considering that its bill, which Gov. John R. Kasich signed Thursday, goes further than Wisconsin’s in several important ways.
While both laws severely limit public employees’ ability to bargain collectively — they both prohibit any bargaining over health coverage and pensions — the Ohio law largely eliminates bargaining for the police and firefighters. Wisconsin’s law leaves those two groups’ bargaining rights untouched. Ohio’s law also gives city councils and school boards a free hand to unilaterally impose their side’s final contract offer when management and union fail to reach a settlement.
Notwithstanding the differences in legislation, the push by those states’ Republican governors and Republican-dominated legislatures points to a pendulum swing away from what many unions and Democrats see as a fundamental right for public employees: the right to bargain over wages and benefits.

I guess it will probably come down to whether the unions can get it on the ballot and repeal it.  I would guess that in an off-year election they'll have a hard time.