When the new non union members start flaunting their extra spending money with new clothes, new shoes, new cars, etc., you can bet that number will swell to 90+% in a New York minute.
A while back Indiana Gov Mitch Daniels instituted, vua executive order ( as he was able to do) many of the reforms just passed in Wisconsin, and proposed in other states. A few years after, in some cases, union membership has dropped by 90%....