Hillary Clinton's '3 a.m. call' girl supports Barack Obama

She is the little girl who has become the key image for Hillary Clinton's Presidential campaign -but now Casey Knowles has come forward to reveal she is a flag-waving supporter for... Hillary's rival Barack Obama.

Now Casey has lashed out at the very ad she appears in, calling it "fear-mongering" - adding: "I thought it was kind of a low-brow."

Casey, of Bonney Lake, Washington, was just eight when she filmed an advert with footage of her sleeping.

That footage was then bought and used for a controversial advert for Hillary's campaign, with a narrator describing a phone ringing in the White House.

"It's 3am and your children are safely asleep. Who do you want answering the phone?," the narrator asked.

Sadly for Hillary, the answer now appears to be Obama.

Casey is now almost 18 and says she is a "fervent Obama supporter" who even campaigns for him.

She said she had seen the ad many times - even watching it being mocked on comedy shows - before she realized it was actually old footage of her sleeping.

"When I was younger my parents got us involved in little acting jobs. We never knew where this footage would end up," she explained.

It was while seeing it again on John Stewart's U.S. topical comedy show "The Daily Show" when her brother noticed something.

"They were parodying this ad, kind of poking fun at it. They were replaying it. We paused it and my brother was like, 'Is that Casey?'

"And we just erupted. Sure enough, it's me."

"My whole family was shocked."

She said she felt bad as an Obama supporter to be in an ad promoting his Demcratic rival.

"Originally I felt kind of bad like I was being disloyal to senator Obama because I didn't know obviously that this was going to happen," she said.

"But I felt bad that my image was being used in this fear-mongering message."

Asked her views on Hillary, she said: "Don't get me wrong I really admire Senator Clinton - as a woman she's a big inspiration. I really respect her.

"But I don't think this ad was the most classy move on her part - I thought it was kind of a low-brow kind of move. I'm not a big fan of the ad or the tactic.

"I really prefer Obama's message of looking forward to a bright future. I think that's a much stronger message."

Since her identity was revealed, Knowles said the Obama campaign has reached out to her and she offered a suggestion.

"I mentioned that we should make a counter ad, me and Obama, against Hillary," she said.

"They thought that was really funny. They actually might take me up on it."