Not only has Hillary lost her lead in Iowa, but she is way down in New Hampshire, too.
In October, she averaged (five polls) a 19-point lead over Obama. In early and mid-November, her lead dropped to an average (five polls) of 13 points. In the polls at the end of November, her lead is down to an average (four polls) of nine points, with the two most recent surveys — Rasmussen and Fox News — showing her lead at seven points.
Given the sharpness of her drop, it is likely that a loss in Iowa would cost her New Hampshire as well.