MethodsNovember 9, 2016

Why 2016 election polls missed their mark

There is a great deal of speculation but no clear answers as to the cause of the disconnect, but there is one point of agreement: Across the board, polls underestimated Trump’s level of support.

MethodsOctober 25, 2016

Oversampling is used to study small groups, not bias poll results

As oversampling and its possible effect on presidential polls are spotlighted ahead of Election Day, learn more about this practice and how pollsters adjust for it.

MethodsSeptember 8, 2016

5 key things to know about the margin of error in election polls

Some of the better-known statistical rules of thumb that a smart consumer might think apply in polls are more nuanced than they seem. In other words, as is so often the case in life, it’s complicated.