The DeSart & Holbrook model is captured in the econometric models component of the PollyVote forecast. It currently forecasts a two-party vote share of 35.7% for Clinton, and 64.3% for Trump in Oklahoma. In comparison, on October 22 Trump was still predicted to obtain 65.9% of the vote.
Putting the results in context
In general, however, a good strategy is to not have too much faith in the results of single models, since they can contain large errors. At the very least, one should check how a model's results compare to benchmark forecasts.
Comparison to the combined PollyVote
The most recent PollyVote foresees Trump to gain 64.1% of the two-party vote in Oklahoma. The results of the DeSart & Holbrook model for Trump are thus 0.2 percentage points above the combined PollyVote in Oklahoma.