Nancy Pelosi to step down as top Democrat in US House

"I will not seek re-election to Democratic leadership in the next Congress," Pelosi said in a floor speech at noon.

At the age of 82, Pelosi was re-elected this year to represent California's 12th congressional district in the House on Capitol Hill.

US media outlets have projected Republicans will take control of the lower chamber after the 2022 midterm elections.

House Republicans on Tuesday nominated the current Minority Leader Kevin McCarthy to be House speaker.

It's unclear who will lead House Democrats in the coming two years with Pelosi's departure from the leadership.

Speaker is the political and parliamentary leader of the House, one of the two legislative bodies in the US Congress.

Democrats will retain control of the US Senate in the next Congress, which will convene for the first time on Jan 3, 2023.

Public trust in Congress reached an all-time low, with only 7 per cent of Americans expressing "a great deal" or "quite a lot" of confidence in it, according to a Gallup poll released this summer.