Stores in Colorado Springs, Fort Collins, Greeley and Longmont will hold strike-authorization votes tonight and tomorrow morning.

On Monday, workers at more Safeway stores went on strike, demanding better pay, benefits, and staffing levels. Union leaders told Denver7 the strike will continue to expand until a contract is reached.

Safeway workers in Colorado Springs will join strikes happening around the state. That's according to the UFCW Local 7 union.

On Tuesday, members of the UFCW Local 7 held a vote to authorize a strike for more stores. Colorado Springs meat and retail workers voted 99% in favor of striking, according to a social media post from the union. They will join the employees at the Fountain Safeway and one location in Pueblo, who began their picket lines over the weekend.

They made good on that promise on June 15, joining the first cities to go on strike, including Fountain, Estes Park, and a Denver distribution center. Later in the day, workers from the Littleton Safeway also walked off the job,

With the clock winding down toward Saturday night's deadline for new contract negotiations, a Colorado union has announced locations where grocery employees are set to walk off the job on Sunday in protest.

Chronic understaffing at Albertsons and Kroger grocery stores has led to a near unanimous vote to strike in about 105 stores in Colorado – including 100% of the workers at the Salida Safeway store.