US President Joe Biden and former President Donald Trump have rallied support for candidates from their respective parties ahead of the midterm elections on Tuesday.

Biden campaigned for Democrats in the battleground eastern state of Pennsylvania on Saturday, together with former President Barack Obama.

Biden said, "We have created so far 700,000 manufacturing jobs, just the last 20 months."

Trump also traveled to Pennsylvania. He made a pitch for Republicans, and blasted the Biden administration's immigration policy.

He said, "If you want to stop the destruction of our country and save the American Dream, then this Tuesday you must vote Republican in a giant red wave."

Polls suggest Republicans are likely on track to secure a majority in the House of Representatives, while Democrats and Republicans are in a close contest in the Senate.

Currently, both houses of Congress are controlled by the Democrats.

Multiple US media outlets reported on Friday that Trump is considering announcing his candidacy for the 2024 presidential election on November 14.

Trump has endorsed more than 200 candidates for the midterm elections. Observers say how successful those candidates are in the midterms will determine how much he will be able to maintain his influence.