US vice president Joe Biden has ruled out serving as Hillary Clinton’s secretary of state should she win the presidency.

"I'll do anything I can if Hillary's elected to help her, but I don't want to remain in the administration," Mr Biden said in an interview with NBC's KBJR affiliate in Duluth, Minnesota.

"I have no intention of staying involved. I have a lot of things to do, but I'll help her if I can in any way I can," he added.

On Thursday, it was reported in Politico that Mrs Clinton's campaign was considering Mr Biden for secretary of state if she wins the Nov 8 election.