They wore "Tom Knox for Philadelphia" T-shirts.

But instead of lending support, they were looking to obtain some.

Two men strolled into the Knox campaign office at Frankford and Cottman Avenues in the Northeast just before 1 this afternoon, produced a gun, and demanded cash.

After getting an undetermined amount, they fled.

No one was tied up or hurt, and the robbers wore no masks, police said.

Contact staff writer Joseph Gambardello at 215-854-2153 or jgambardello@phillynews.com