Democratic control of the House after the 2026 midterm elections represents the central factor shaping trader consensus around the 64% implied probability. Multiple Democratic lawmakers introduced articles of impeachment in April 2026 citing foreign policy disputes and executive actions, though these measures stalled in the current Republican majority. National polls conducted that month showed 52-55% public support for impeachment proceedings. Historical patterns indicate that midterm losses by the president's party often produce divided government, enabling House passage followed by a Senate trial. Current structural barriers limit near-term action, yet the resolution window extending through 2029 keeps longer-term scenarios in play for market participants.