Demonstrators gathered at a December rally in Minneapolis, where they advocated forĀ a higher minimum wage for fast food workers.

Supporters of a $15 citywide minimum wage in Minneapolis are taking their campaign to the headquarters of one of the city's biggest companies: Target.

Organizers of the 15 Now campaign say they'll protest outside Target's downtown headquarters at 5 p.m. Tuesday. They're urging the company's leaders to raise workers' wages, following a recent move by competitor Walmart, which upped its minimum wage to $9 and will increase it to $10 next year. Walmart's announcement was followed by a similar one from the company that operates T.J. Maxx, Marshalls and Home Goods stores.

Supporters of the wage campaign in Minnesota hope a raise for Target employees could prompt other companies to follow. Similarly, they say a citywide wage hike for Minneapolis could spur surrounding cities to boost pay.

In a news release, the 15 Now organization responded to Mayor Betsy Hodges' position on the issue; the mayor recently told the Star Tribune that while she supports higher wages for workers, she does not back a citywide increase.

"A serious regional strategy, which the mayor says she wants, means building a powerful grassroots movement for $15 across the Twin Cities, and Minneapolis is best positioned to lead the way," said organizer Ginger Jentzen.