Senior correspondent Judy Woodruff looks at Michelle Obama’s role in her husband’s campaign and previews her opening remarks at the Democratic National Convention Monday night.

“Her challenge tonight is to come across as someone the American people can be comfortable with as first lady and everything that represents and, by the way, that is a very tough job,” said Woodruff.

“I’m sure that Obama himself will say something about McCain but I would say the toughest language is going to come from others,” she added.

Woodruff also commented on Sen. Ted Kennedy’s likely appearance at the convention, saying “for Ted Kennedy, who has been diagnosed with a very serious illness… the fact that he’s here, when he’s under going chemotherapy, I think that will be a very emotional moment.”