ABC News' David Chalian reports: In a radio interview with Sean Hannity, Vice President Cheney was asked what he thought of Sen. Hillary Clinton's chances of becoming president. "I think she could win. I hope she doesn't. I disagree with her on nearly all the issues, but nobody should underestimate her. She's a very serious candidate for President," said Cheney. As for that other potential Democratic '08er who has been all the buzz this week, Cheney said, "Barack Obama, attractive guy. Don't know him well, met him a few times. I think at this stage, my initial take on him...