The Jerome model provided an updated forecast of the election result. It currently forecasts a two-party vote share of 54.9% for Clinton, and 45.1% for Trump in Illinois. In comparison, on October 12, Clinton was predicted to gain only 54.4% of the vote.
Putting the results in context
As any other method, models are subject to bias. Therefore, as a general rule, you should not have too much confidence in the results of a single econometric model. Rather than trusting the results from single models, you should rely on combined models or, even better, a combined forecast that incorporates forecasts from different methods, each of which incorporates different data.
Results compared to the combined PollyVote prediction
The latest PollyVote predicts Clinton to gain 60.2% of the two-party vote in Illinois. PollyVote currently predicts Clinton to gain 5.3 percentage points more compared to the results of the Jerome model.