The Crosstab model provided an updated forecast of the election result. It currently forecasts a two-party vote share of 37.9% for Clinton, and 62.1% for Trump in South Dakota. In comparison, on October 31, Clinton was predicted to gain 39.4% of the vote.
Putting the results in context
In general, however, don't have too much faith in the results of single models, since they can incorporate large errors. Rather than trusting the results from single models, the best practice scientific advice is to use combined models or, even better, the combined PollyVote forecast that relies on forecasts from different methods, each of which draws upon different data.
Results compared to the combined PollyVote forecast
The current PollyVote predicts Trump to gain 60.2% of the two-party vote in South Dakota. PollyVote currently predicts Trump to gain 1.9 percentage points less compared to the results of the Crosstab model.