This bitter House race in New York shows how health care is dominating the battle for Congress

In New York state's 19th District and other swing races around the country, Democrats have run with health care as their top issue. In the pivotal race, Democrat Antonio Delgado has hammered first-term GOP Rep. John Faso over his vote to repeal and replace the Affordable Care Act. Meanwhile, the GOP has accused Delgado, who backs a public option, of being a radical who supports a government takeover of health care.