Former president Bill Clinton does not rule out the possibility of a third member of his family running for president one day.
Asked in an interview with People magazine, to appear Friday, whether his 28-year-old daughter Chelsea Clinton would ever consider running for office, the ex-president said: "I don't know.
"If you asked me this before (January's Democratic nominating contest in) Iowa, I would have said: 'No way. She is too allergic to anything we do.' But she is really good at it."
New York Senator and former first lady Hillary Clinton is currently battling for the Democratic presidential nomination. An early setback motivated the only child of the political power couple to get involved.
Bill Clinton said his daughter joined Hillary Clinton's campaign after realizing her mother "lost Iowa 100 per cent because of younger voters."
"She was upset, bawled, went into her employer and said: 'Look, you got to let me go or give me an indefinite leave of absence. I'm not letting my mother go down like this,'" he said.
He called his daughter's "emergence" the "second best thing" of the campaign, after his wife's "ability to endure in the face of all the blows that have been rained on her."
Asked about his wife's rival Barack Obama, Bill Clinton said: "He's an immensely talented man. I think I understand him. There are enough similarities in our childhoods and things that I think I get what he is doing.
"But I do think it's better to have made a lot of decisions before you get to be president."