RALEIGH, N.C. (AP) — North Carolina's Senate race boils down to a battle of extremes. At least that's how Democratic Sen. Kay Hagan and Republican challenger Thom Tillis want voters to see it. Running against President Barack Obama as much as he is against Hagan, Tillis calls the president's health care law an "unworkable mess," blasts American foreign policy as muddled and weak, and bemoans a $17 trillion-plus national debt.