Look at this NBC “report” from 1986.
It cites no specific poll, nor the way the data was collected, who was polled, how many people were polled. Nothing.
Sure, it’s a story the right would like to have believed was true, but was probably designed to make the right relax while the takeover of the educational institutions marched stealthily forward.
Pure crap, and this kind of stuff is still being peddled by this crap merchant, and her colleagues, 42 years later.