Precious film premiere at the AFI FEST 2009, Grauman's Chinese Theatre, Hollywood, California.

Precious film premiere at the AFI FEST 2009, Grauman's Chinese Theatre, Hollywood, California.

Sarah Palin opened up to Oprah Winfrey about her family, her future and what went wrong during the election in a revealing TV interview.

Palin, who has just released her memoir, Going Rogue told Oprah about the moment she got a call from Senator John McCain asking her if she would be the Republican vice-presidential candidate.

"I didn't blink. I felt quite confident in my abilities and my executive experience, knowing that this is an executive administrative job," she said.

After that call, Palin flew to Arizona to meet Senator McCain to sign up as his running mate, but was so petrified by the process she confessed about a bad grade in college.

She confessed: "It went on for hours through that evening. I thought after all that, 'Wow, I better confess it now. The one skeleton that is in my closet.' By then, you know, they already knew about [my daughter] Bristol being pregnant. I said, 'The one skeleton that I have to confess to is I did [get] a D 22 years ago in a college course.' And I thought that was going to be the extent of the controversy of Sarah Palin's life."

Palin admitted to Oprah she was surprised that McCain's team knew her 17-year-old daughter was pregnant because she thought it was a family secret. She said it disturbed her that the pregnancy became public knowledge and that she wished they could have dealt with the issue in a more productive way.

"If [Bristol and I] had been given the allowance to deal with the issue in a more productive way, we perhaps could have sent a better message: 'This is not to be glamorised. It is not to be emulated. It is a tough, tough challenge and it is a problem in America, so let's try and deal with it'."

Palin revealed she spoke with Bristol when her pregnancy hit the headlines.

"She was quite devastated and, perfectly honestly, she was quite embarrassed," she says. "She called me in tears saying 'Oh, mom, now not just [in] Wasilla do they know what's going on in my life. Now the whole world knows'."

Palin said she was surprised that her children became a talking point during her campaign.