Illinois House 2018 — Model Retrospective

The model's final pre-election forecast gave Sean Casten a 56% chance of winning the Illinois House 2018 primary. Sean Casten won, matching the model's top pick.

  1. Sean Casten — 56% model odds (won)
  2. Peter J. Roskam — 44% model odds

Model accuracy · 2026 race forecasts