Trump, Republican control of US House, Senate under threat from Democrats; election polls in Alaska, Iowa, Texas, Ohio, Michigan, Pennsylvania states to watch

Welcome to our live coverage of the US midterm elections.

Americans head to the polls tonight (AEDT) in elections that could have big ramifications for the second half of Donald Trump’s presidency.

All seats in the US House of Representatives and a third of those in the Senate come up for grabs.

The results will determine whether the Democrats can neuter Trump’s agenda or if he will maintain his grip on America until the presidential election in November 2028.

The elections, which are on track to be America’s most expensive ever, are being fought on issues inducing the cost of living, the war on Iran, artificial intelligence and data centres, abortion rights, the immigration crackdown, and, of course, the president himself.