More from the article...

... Why it matters: Unions have seen a resurgence in recent years, with an uptick in strikes and organizing efforts, helped along by more positive public sentiment and, until recently, a strong labor market that emboldens workers to push for more from their employers.

By the numbers: 70% of Americans said they approved of unions, per Gallup's most recent poll, conducted in August. ...

[historical graph in the article...]