Brazen robbers knock off Knox campaign office

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.