Nate Silver: Beware of polling in the primaries
Nate Silver’s 538 blog New York Times Nate Silver, who runs the excellent 538 blog at the New York Times, has produced a lengthy analysis overnight on the performance of polls in the current primary season. His chart above tracks the error in the polls and compares it to the number of days in advance of the election that they were conducted. Nate calculates the error by looking at how much the polls missed the final margin between the top…