haxxiy on 21 August 2019
Some of you are reading too much on weekly surveys which are bound to change slighly from week to week due to sheer brownian motion... as any statistician would tell you. Not to mention most of them come from low quality online-only pollsters (HarrisX, SurveyMonkey, Morning Consult, Zogby etc.) which tend to overestate the weight of younger voters, and infamously distorted the polling average of some recent elections.
This is the 2016 polling average without online pollsters of any sort, for instance.
