As the polls begin to close in the US midterm elections, let's take a look at what's at stake: 35 Senate seats, which will be the most critical to the future of the Trump administration. Democrats need at least 51 seats to gain a majority in that chamber, meaning winning at least 17 of the 35 seats to be announced. All 435 seats of the House of Representatives, which the Democrats are expected to win according to most polls. 36 of the 50 US states will also elect a new governor, which has a reduced influence on foreign policy but will make a big difference for those states.