Dennis Kucinich, a candidate in the Democrat party's presidential race, has announced he is withdrawing his bid for the White House.
The Ohio congressman told a meeting of supporters in his home state that he was withdrawing from the race to concentrate on the election battle for his congressional seat.
"I won't be president, but I can continue to fight for important issues as the US congressman representing the community ... first in my heart - Cleveland, Ohio," he said.
Kucinich had performed poorly in the Democratic race, gaining only one per cent of the vote in the New Hampshire primary.
He had also struggled to match the considerable campaign funds raised by his Democratic rivals.
During his presidential campaign, Kucinich had called for an immediate withdrawal of US troops from Iraq, was in favour of gay marriage and universal healthcare and had called for the formation of a "department of peace" in the US government.
Last year he hit the headlines for attempting to impeach Dick Cheney, the US vice president, over his involvement in the Iraq conflict.
His run was a second attempt to run for the presidency, however his campaign had become an issue in his home state, where opponents said he was neglecting his constituency.