The first set of polls are set to open in Vermont at 5am (1000 GMT). Voting in New Jersey, Virginia, Connecticut and Kentucky will start at 6am (1100 GMT). Why the US midterms matter even if you don't live in America More than 230 million eligible voters across the United States can head to the polls on Tuesday to decide who will represent them in Congress. All 435 House of Representatives seats and 35 of the Senate’s 100 seats are being contested. Voters in 36 states will also elect governors.