Illinois Senator repeatedly on the defensive as he seeks to bat away criticism of his remarks about small-town values, questions about his patriotism and the incendiary sermons of his former pastor in a potentially pivotal debate.
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VIDEO: Artists sketch the 2008 presidential candidates, describing the inspiration behind each one.
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VIDEO | Chris Cillizza and Anne Kornblut recap the Clinton-Obama debate at the National Constitutional Center in Philadelphia, Pa.
VIDEO | Aboard a creaky train back to D.C., David Broder recounts his conversations with voters from Upper Dublin, Pa. ahead of the Keystone State's primary.
VIDEO | Pope Benedict XVI, the spiritual leader of 65 million American Catholics, arrived at Andrews Air Force Base today and was greeted by President Bush and about 800 cheering onlookers.
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I am ALWAYS surprised by poll numbers, which is why we go out and do polls -- to make sure we aren't making incorrect assumptions about how people feel. And yes, I think the numbers show that the conventional wisdom about her super-bounce from Ohio and Texas might have been off.
Anne E. Kornblut Post Politics Hour | April 16, 2008
Katie Couric speaks with chief White House correspondent Bob Schieffer about Democratic battleground in Pennsylvania, where the neck-and-neck race is still too close to call.