(CNN) - Hillary Clinton Thursday jabbed at Sen. Barack Obama for being a first term senator and called her rival for the Democratic presidential nomination a "blank screen."
In an interview on ABC's Nightline Thursday night, Clinton dismissed notion's Barack Obama voters are uninformed, but said the Democratic presidential front-runner aptly described himself in his 2006 book, "The Audacity of Hope."
"I think the best description, actually, is in Barack's own book, the last book he wrote, 'Audacity of Hope,' where he said that he's a blank screen," she said in the interview. "And people of widely differing views project what they want to believe onto him. And then he went on to say, 'I am bound to disappoint some, if not all of them.'"
"He was in the state Senate, what, three years ago, four years ago?" Clinton said in continued jabs. "It's hard to know exactly what his positions are because they have changed rather rapidly in that four-year period. But there is something very appealing, and people have a right to vote for whomever they want."
The comments came a day before the Clinton campaign launched a tough new ad in Texas that aims to portray Clinton as considerably more prepared to handle a foreign policy crises than Obama. Over scenes of sleeping children, the ads narrator asks, "Who do you want answering the phone the phone?" at 3 in the morning.
Obama Campaign Manager David Plouffe forcefully responded to that ad in a conference call with reporters Friday morning."We don't think the ads are going to be effective at all, because Senator Clinton has already had her red phone moment. It was a decision whether to allow George Bush to invade Iraq, and she answered affirmatively," Plouffe said.
- CNN Ticker Producer Alexander Mooney