Massachusetts House 2020 — Model Retrospective

The model's final pre-election forecast gave Katherine M. Clark a 100% chance of winning the Massachusetts House 2020 primary. Katherine M. Clark won, matching the model's top pick.

  1. Katherine M. Clark — 100% model odds (won)
  2. Caroline Colarusso — 0% model odds
  3. All Others — 0% model odds

Model accuracy · 2026 race forecasts