The DeSart model published an updated prediction of the election outcome. The model currently predicts a two-party vote share of 37.9% for Clinton and 62.1% for Trump in South Dakota. In comparison, on August 14 Trump was predicted to garner 0.0% of the vote.
Putting the results in context
In general, however, don't have too much faith in the results of single econometric models, since they sometimes incorporate large errors. Rather, one should examine how a econometric model's results compare to benchmark forecasts.
Results vs. other econometric models
An average of recent econometric models in South Dakota has Trump at 59.5% of the two-party vote. This value is 2.6 percentage points lower than his corresponding numbers in the DeSart model.
The DeSart model compared with PollyVote's forecast
PollyVote currently predicts Trump to gain 59.3% of the two-party vote in South Dakota, which is 2.8 percentage points below the results of the DeSart model. In comparison, a look at the PollyVote national prediction for Trump shows that the actual results are 15.1 percentage points higher.