The Crosstab model is captured in the econometric models component of the PollyVote. It currently forecasts a major vote share of 37.7% for Clinton, and 62.3% for Trump in South Dakota. In comparison, on October 31 Trump was predicted to collect 60.6% of the vote.
Putting the results in context
As any other method, models are subject to bias. In general, you should not be too confident the results of a single econometric model. Instead of relying on results from single models, the evidence-based approach is to rely on combined models or, even better, the combined PollyVote forecast that relies on different methods and data.
Results compared to the combined PollyVote forecast
The current PollyVote forecasts Trump to gain 60.3% of the two-party vote in South Dakota. PollyVote currently predicts Trump to gain 2.0 percentage points less compared to the results of the Crosstab model.