The DeSart model released an updated forecast of the election result. The model currently predicts a two-party vote share of 46.4% for Clinton and 0.0% for Trump in Illinois. In comparison, on August 4, Clinton was predicted to gain 53.6% of the vote.
Putting the results in context
As any other method, econometric models are subject to bias. Hence, one should not be too confident the results of a single econometric model. Instead of trusting the results from single econometric models, you should look at combined econometric models or, even better, the combined PollyVote forecast that uses forecasts from different methods, each of which uses different data.
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.