Workers at the Live Nation-owned music venues Summit Music Hall and the Marquis Theater will vote this month on whether to join Live Nation’s Fillmore Auditorium in unionizing for greater worker protections, according to the Denver-based organization they want to join. “Despite an overwhelming majority of employees signing authorization cards, Live Nation has declined to voluntarily recognize the union,” organizers wrote in a Monday statement, adding that employees at Summit and the Marquis will hold an election later in June. There are 25 to 30 eligible union members, said Max Peterson, business representative for the Denver Theatrical Stage, Film, & Exhibition Employees’ Union — under the International Alliance of Theatrical Stage Employees (IATSE) Local 7 — in an interview with The Denver Post. The workers at Summit and Marquis coming together to form a union is in no way related to the current legal issues Live Nation is grappling with, Peterson added.