Wasn't Jimmy Carter polling ahead of Ronald Reagan, right up until it was a blowout??
With the exception of Whites, the rule among the peoples of the world, whether residing in their homelands or settled in Western democracies, is ethnocentrism and moral particularism: they stick together and good means what is good for their ethnic group." -Alex Kurtagic
The Gallup poll had Carter ahead by 3 points on the weekend before the vote. The undecideds were the key. The undecideds went against the incumbent. Ditto Hillary.