With less than six weeks before November’s elections, Republicans are defending their 218-seat House majority as forecasters increasingly favor Democrats. Decision Desk HQ (DDHQ) gives Democrats a 72 percent chance of flipping the chamber, which requires a net gain of at least four seats, and a 52 percent chance of winning both chambers. The most competitive Republican-held districts include seats in Arizona, California, Nebraska, New Jersey, Virginia, Iowa, Wisconsin, Colorado and Pennsylvania. Ratings vary by forecaster, with Cook Political Report often calling the contests toss-ups while DDHQ more frequently favors Democrats. The broader political backdrop includes President Trump’s 58 percent disapproval rating in an Emerson College poll, an 11-point Democratic advantage on the generic congressional ballot, and concerns over economic conditions and energy prices.