The DeSart & Holbrook model is captured in the econometric models component of the combined PollyVote forecast. It currently forecasts a major vote share of 50.5% for Clinton, and 49.5% for Trump in Iowa.
Historically, Iowa has been a battleground state, in which neither the GOP nor the Democrats have had overwhelming support to secure its electoral college votes. Hence, forecasts in this state are of particular interest.
Putting the results in context
As any other method, models are subject to bias. As a result, a good strategy is to not rely too much on the results of an individual econometric model. Rather than relying on results from single models, forecasting research recommends to rely on combined models or, even better, a combined forecast that relies on different methods and data. The latest PollyVote expects Clinton to gain 50.5% of the two-party vote in Iowa.