Americans vote in midterm election that could upend Trump presidency

Voters across the United States are going to the polls on Tuesday and Washington is bracing for a major upheaval. President Donald Trump's Republican Party currently holds both chambers of Congress. But poll watchers are predicting a Democratic wave that could see that all change. Trump isn't on the ballot, but the midterm election is seen as a referendum on the direction he's taking the country. And with widespread frustration over the rising cost of living and the ongoing war in Iran, the mood has turned against Republicans. Analysts agree that the 435-seat House of Representatives will almost certainly change hands. Now all eyes are on the Senate, where Democrats need to net four seats to gain control. That could see the opposition impose the first significant checks on the president since he returned to the White House last year. With so much at stake, the run-up to the vote has been marked by vast spending by donors and vitriolic attacks on candidates. Even before polls opened on Tuesday, citizens had cast a record 57 million votes.