DES MOINES — Late Monday night, supporters of Hillary Clinton gathered for what they expected would be a victory rally.Over the weekend, her campaign had exuded confidence, with some advisers predicting she would win the Iowa caucuses by several percentage points, and by Monday evening, they were urging news outlets to call the race in her favor. Mrs. Clinton prepared a victory speech in which she virtually ignored her rival, Senator Bernie Sanders of Vermont, and attacked the Republican candidates.

Source: Tight Democratic Race in Iowa Unnerves Clinton Campaign – The New York Times