Polls are changing and strategies are shifting as Obama and McCain prepare to square off in their third and final debate three weeks before Election Day. What do you expect to hear from the candidates on Wednesday night?

Ken Rudin, NPR's political editor, weighs in with his expectations for the debate. Rudin writes the "Political Junkie" column, and has a weekly podcast called "It's All Politics".

Robert Holsworth, director of the Center for Public Policy at Virginia Commonwealth University, talks about Virgina's voting history and what Obama and McCain need to do to win the swing state.

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