Illinois House 2018 — Model Retrospective

The model's final pre-election forecast gave Randall M. "Randy" Hultgren a 56% chance of winning the Illinois House 2018 primary. Lauren Underwood won — an upset relative to the model's favorite.

  1. Randall M. "Randy" Hultgren — 56% model odds
  2. Lauren Underwood — 44% model odds (won)

Model accuracy · 2026 race forecasts