The DeSart model is included in the econometric models component of the combined PollyVote. The model's forecast is that Clinton will receive 37.9% of the two-party vote share in South Dakota, while Trump will win 62.1%.
Putting the results in context
As a general rule, however, a good strategy is to not have too much faith in the results of single econometric models, because they sometimes contain large errors. At least, one should check how a econometric model's results compare to benchmark forecasts.
Comparison to the combined PollyVote
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.