The current House breakdown is 232 Democrats, 198 Republicans, one Libertarian and four vacancies. Republicans need a net gain of 17 seats to retake the majority in 2020. There are 30 Democrats sitting in districts carried by President Trump in 2016, and just four Republicans sitting in districts carried by Hillary Clinton. But Trump's weak standing in suburban districts has hampered GOP challengers and Republican retirements have given Democrats strong pickup opportunities. At the moment, the most likely outcome is a Democratic net gain of between zero and 10 seats.