Christina Bohannan holds an 86% implied probability in the IA-01 House race because recent polling and forecaster shifts show her building a modest lead in this repeatedly competitive Iowa district. A July survey placed her at 40% to incumbent Mariannette Miller-Meeks’s 35%, with an independent drawing 11%, while Cook, Sabato, and Inside Elections have moved ratings toward Lean or Tilt Democratic. Broader midterm dynamics, including economic pressures and lower Republican support tied to the Iran conflict, have amplified Democratic momentum in this toss-up seat. Both candidates have raised over $7 million, but Bohannan’s ground game and the district’s evolving suburban and Johnson County trends have pushed prediction-market pricing well ahead of the narrow 2024 result. A late October debate and the independent’s presence remain variables before November 3.