Iowa Senate 2020 — Model Retrospective

The model's final pre-election forecast gave Joni Ernst a 67% chance of winning the Iowa Senate 2020 primary. Joni Ernst won, matching the model's top pick.

  1. Joni Ernst — 67% model odds (won)
  2. Theresa Greenfield — 33% model odds
  3. Rick Stewart — 0% model odds
  4. Suzanne Herzog — 0% model odds
  5. Scattered — 0% model odds

Model accuracy · 2026 race forecasts