November 8, 2014 7:00 PM

Election pollsters explain why they were wrong on NC's US Senate race

In the days ahead of Tuesday's election, 10 different opinion polls sought to determine the leading candidate in North Carolina's Senate race. Seven had Kay Hagan leading, two had the candidates tied, one called it for Thom Tillis. Why were most polls so wrong? It's not easy being a pollster, one says.

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