Democratic presidential hopeful Barack Obama is not interested in running for Vice-President in the US.
He made that clear during an appearance on US chat show 'The Late Show With David Letterman'.
Letterman asked Obama if there had been any discussion of the Illinois senator sharing the Democratic ticket with New York Senator Hillary Clinton.
"No, you don't run for second," Obama said. "I don't believe in that."
Obama also told Letterman that his family was holding up well on the campaign trail.
"I take my kids occasionally," he said. "Malia, who's eight, Sasha, who's five - we take them on the campaign trail and they see these big crowds.
"I ask them sometimes: 'How's it going?' and the last time I did that, my eight-year old turned to me and said: 'This is terrific, daddy, but what are we doing here again?'
"She wasn't overly impressed."
Still, Obama said: "I'm not getting back to Chicago very often."