Arizona House 2018 — Model Retrospective

The model's final pre-election forecast gave Tom O'Halleran an 81% chance of winning the Arizona House 2018 primary. Tom O'Halleran won, matching the model's top pick.

  1. Tom O'Halleran — 81% model odds (won)
  2. Wendy Rogers — 19% model odds
  3. David Shock — 0% model odds

Model accuracy · 2026 race forecasts