The DeSart & Holbrook model provided an updated prediction of the election result. It currently predicts a major vote share of 48.8% for Clinton, and 51.2% for Trump in Arizona. In comparison, on October 14 Trump was still predicted to gain 53.5% of the vote.
Putting the results in context
As any other method, models are subject to bias. As a result, don't have too much faith in the results of a single econometric model. At least, one should examine how a model's results compare to benchmark forecasts.
Comparison to the combined PollyVote
The latest PollyVote forecasts Trump to gain 52.3% of the two-party vote in Arizona. PollyVote currently predicts Trump to gain 1.1 percentage points more compared to the results of the DeSart & Holbrook model.