The elevated number of contested Democratic House primaries in 2026, fueled by redistricting ripple effects in states such as Texas, generational turnover pressures, and progressive challenges in New York, Colorado, Michigan, and Connecticut, has already produced at least seven incumbent defeats. These include losses tied to younger democratic socialist candidates and member-on-member contests after district changes. With most nominating elections completed by mid-October and a record share of incumbents facing opposition, trader consensus centers on the 10-12 range as the likely total. Remaining primaries or any late withdrawals could still shift the count, though historical patterns suggest the final figure will stay near current pricing absent major surprises.