With this debate focused on foreign policy, Barack Obama's task will be to make undecided voters feel comfortable with him as a possible Commander-in-Chief.
With most polls showing a very tight presidential race, all three debates take on even greater importance this year -- with both Barack Obama and John McCain hoping to land their punches and make a convincing case to undecided voters.
Jon Decker reports.SOUNDBITE: Clark Judge, former presidential speechwriter
Tom Fiedler, Dean- Boston University College of Communication
