You would think so, but there tends to be pretty significant bias in union card campaigns and authorization votes. Strike authorizations tend to be even higher.

You would think so, but there tends to be pretty significant bias in union card campaigns and authorization votes. Strike authorizations tend to be even higher. People who don't support the campaigns tend to just not vote, but there's also a significant number of people who just don't find out. A better "survey" would be the number who actually sign union cards in workplaces with mandatory union orientations (meaning every employee is necessarily "surveyed"). This also means agreeing to pay dues so there's a "money where your mouth is" component. (Source: I've helped with running a few.)