Question 3 would give Uber and Lyft drivers the right to organize a union. The companies consider the drivers to be independent contractors, a classification of workers not typically allowed to unionize under federal law. This ballot initiative would create a new framework for drivers to do so under state law.

On a muggy June morning, a handful of rideshare drivers descended on Chicago’s O’Hare International Airport with stacks of red, white and blue leaflets, limp in the heat, that demanded to “end unfair deactivations.