http://www.nytimes.com/news/afforda...-people-souring-on-health-law-and-obama/?_r=0 The survey, of 2,089 18- to 29-year-olds, was conducted online by GfK between Oct. 30 and Nov. 11 by and has a margin of sampling error of plus or minus two percentage points. It is the latest in a series of two dozen polls that Harvard has conducted of young voters since 2000.