Ann Selzer’s survey showing Harris leading Trump in Iowa may be an outlier, but the pollster’s record can't be ignored.
Sometimes outliers are early indicators, capturing something other polls just haven’t measured yet. Other times, they’re a ...
When an Iowa Poll is released, readers often wonder how close polls track to election results. Compare the past 20 years of ...
Renowned Pollster J. Ann Selzer said Tuesday she would be reviewing her data to determine why a Des Moines ...