Republicans currently hold a narrow House majority of 218-212 with four vacancies as of mid-August 2026, reflecting their post-2024 gains. Trader consensus at 98% against losing control before the November midterms stems from the limited number of scheduled special elections, most occurring in safely partisan districts unlikely to produce net Democratic flips in the short timeframe. Historical patterns show that shifting majorities via vacancies, resignations, or party switches requires multiple rapid changes that have not materialized. Remaining barriers include the compressed calendar before general elections and the absence of widespread vacancies that could trigger decisive contests. Scenarios that could still alter the outlook involve unexpected deaths or resignations in competitive seats leading to Democratic gains in specials held before November, though such developments remain low-probability given current vacancies and district compositions.