US media say former President Donald Trump is considering announcing his candidacy for the 2024 presidential election on November 14.

Media outlets, including Axios, reported on Friday that a series of multi-day political events will possibly follow the official announcement.

The latest polls suggest that Republicans will likely make gains in Congress in next Tuesday's midterm elections.

Axios says Trump hopes to take credit for possible Republican victories to build momentum for his presidential bid.

Observers say the level of success by candidates Trump supports will determine how much he will be able to maintain his influence.

A special committee of the House of Representatives is looking into the attack on the Capitol by Trump's supporters in January last year. The FBI is also continuing its investigation after seizing classified documents from his home.