The few states in the black allow it, so why the fuss? Collective bargaining is hardly the problem it seems. Those that ban it are in the hole.
Check out the states that are not running deficits -- and all, in various ways, just so happen to support collective bargaining with state employees: Arkansas, Alabama, North Dakota and Wyoming.
Further establishing the myth that banning collective bargaining curbs deficits, consider the states that ban it: Four of the five that make it explicitly illegal face budget shortfalls.
Governors in states like Wisconsin and Ohio hoping to ban collective bargaining simply cannot prove it has anything to do with reducing deficits.