Way more than you'd think.
I just retired last month after 25 years teaching in an Alternative High School. When I started, almost everybody was a rank and file dembot that shivered when I'd mention Reagan or G.H.W. Bush. Last year I sort of thought about it before I retired and I'd say that almost half of the staff in our school thought that 0 was nuts and that the dem's were actually anti-American. The staff seemed even more pizzed at the NEA for the way it has come to almost demand your money and more or less tell you how they'll spend it politically for you.
In Illinoisistan, NEA members have the option of having what they call the political portion of your dues returned to you if you request. Over the years I'd informed the staff of this option to the point that the Ill-NEA representative called the school and asked what was happening and decided that from that point each teacher had to request their own refund form from the state office. Last year more than half of our teachers requested the refund.
I feel good about my part in that. Not there yet, but it's much better than it was.
Thanks Skimbell for the informative reply. Will pass it on to my neighbor. Illinoisistan made me laugh out loud..sort of like where I’m from Kalifornia.