Arizona House 2020 — Model Retrospective

The model's final pre-election forecast gave Tom O'Halleran a 67% chance of winning the Arizona House 2020 primary. Tom O'Halleran won, matching the model's top pick.

  1. Tom O'Halleran — 67% model odds (won)
  2. Tiffany Shedd — 33% model odds

Model accuracy · 2026 race forecasts