Sanders is going to New York and Virginia to meet with the workers waging historic union campaigns.
About 70 percent of the workers at the Atlanta store signed union cards for their petition.
The move comes after revelations that Amazon hired a prominent Democratic polling firm for its union-busting campaign.
Support is especially strong among young Democrats, who were 91 percent in favor of the Amazon union.
The company’s injury rate increased in 2021 despite its pledge to become “Earth’s Safest Place to Work.”
Sanders praised the Amazon Labor Union for sparking a “national, sweeping movement.”
If Amazon Labor Union’s count is accurate, that represents about 10 percent of the company’s facilities.
The future of the labor movement may be in worker-led self-organization, as Amazon and Starbucks victories have shown.
New York Amazon workers’ win on Friday is already having an impact on workers nationwide.