Midterms, in maps and charts: What’s at stake this Tuesday and where Trump stands

On 3 November, US voters will choose whether Republicans keep control of Congress or Democrats take one or both chambers. A Democratic majority could make it harder for President Donald Trump to pass legislation, approve budgets and secure appointments during the final two years of his term; polls cited in the article show Trump’s approval at 37% and Democrats favoured to win both chambers.

Republicans have only a narrow House majority, which Democrats could overturn with a net gain of four seats; an average of 29 polls puts Democrats at 51% support, ahead of Republicans at 42.5%. Democrats need four net Senate seats to regain control, with 35 seats up for election, including contests in traditionally Republican states such as Texas, Ohio and Alaska. Voters will also elect governors in 36 states, whose policies affect issues including abortion, voting rights, immigration and education.