The Rothschild model is captured in the econometric models component of the combined PollyVote. The model expects that Clinton will receive 99.0% of the two-party vote share in Montana, whereas Trump will end up with 0.0%.
Putting the results in context
As a general rule, however, don't have too much faith in the results of single econometric models, as they often contain large errors. At least, one should examine how a econometric model's results compare to benchmark forecasts.
Results compared to other econometric models
In comparison to the average results of other econometric models Clinton performed better with 0.0 percentage points, while Trump did worse with 0.0 percentage points.