The DeSart & Holbrook model enters the econometric models component of the PollyVote. It currently forecasts a major vote share of 42.6% for Clinton, and 57.4% for Trump in South Dakota.
Putting the results in context
As a general rule, however, don't have too much faith in the results of single models, as they often contain large errors. Instead of relying on results from single models, you should use combined models or, even better, the combined PollyVote forecast that draws upon forecasts from different methods, each of which draws upon different data.
The DeSart & Holbrook model compared with PollyVote's forecast
The latest PollyVote expects Trump to gain 58.9% of the two-party vote in South Dakota. The results of the DeSart & Holbrook model for Trump are thus 1.5 percentage points below the combined PollyVote in South Dakota.