A "referendum question" is a question posed to a group of people or voters, asking them to vote on a specific issue or decision. It is used to gather the collective opinion or decision of the public on important matters. Full definition
It has collected an estimated 250 signatures on a petition requesting a binding referendum question on the proposal to create a new downtown. (articles.chicagotribune.com)
The concern is that voters would miss referendum questions if they are placed on the back of the ballot. (nystateofpolitics.com)
Forty of 65 referendum questions passed, down a bit from previous election cycles but still above historical averages. (weac.org)