Republicans enter the 2026 midterms defending a narrow House majority of roughly 218 seats amid standard midterm headwinds for the president's party. Trader prices cluster tightly between 190-214 seats because Democratic generic-ballot leads, special-election overperformance, and an underwater presidential approval rating point to net losses, while mid-cycle redistricting gains and a relatively favorable map for GOP incumbents limit downside. Dozens of Republican-held toss-ups and open seats create volatility, with outcomes hinging on national mood, candidate recruitment, and turnout in the final months. Shifts in polling averages, late-breaking legislative or economic developments, or surprises in key battlegrounds could quickly widen the distribution among the leading buckets.