On average, the D less R margin in the early vote mispredicted the final Clinton/Trump margin by 14 points! Pollsters get yelled at when their polls are off by even 3 points, and anything more than that is considered an absolute disaster. Imagine if a poll was off by 14 points: no one would ever listen to it again! And yet we get the same frankly amateurish analysis of the early vote in every election.
I don’t think you understand statistics well enough to speak on this.
2016 Presidential Election – Predicted Clinton over Trump with 71.4%.
The above for example was showing outcomes of simulations. Many polls reported way higher outcomes for Clinton and he was one of the few models showing a trump outcome and Trump’s path to victory was in the simulation results. This wasn’t a fail but a success of his model
Like when you are told that in a coin flip, heads is the outcome 51% of the time and hear every coin flip will be heads