There are just days to go until the US midterm elections, when voters take part in a ballot that could have a major impact on the rest of Donald Trump's presidency.

What are the midterms?

On 3 November, Americans will choose members of Congress, which is made up of two parts - the House of Representatives and the Senate.

Elections take place every two years, and when they happen in the middle of the president's four-year term of office, they are called the midterms.

A key task of Congress is to create and pass federal laws - laws that apply nationwide.

The outcome of the midterms will decide which political party - Trump's Republicans or opposition Democrats - controls Congress and how easy it is for the president to carry out his plans.

The results are also seen as a measure of how happy people in the US are with the president's performance so far.

Who is being elected?

All 435 members of the House - the lower chamber of Congress - will be elected. They serve fixed terms of two years.…